diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7dfdb9f8d68..f90530b2057 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 [Unreleased]
 
+### Fixed
+- `name` override fixes for message id computation and trait definitions - [#2649](https://github.com/use-ink/ink/pull/2649)
+
 ## Version 6.0.0-alpha.4
 
 ### Added
diff --git a/crates/ink/codegen/src/generator/metadata.rs b/crates/ink/codegen/src/generator/metadata.rs
index 5a953d79d13..185fb3c22ce 100644
--- a/crates/ink/codegen/src/generator/metadata.rs
+++ b/crates/ink/codegen/src/generator/metadata.rs
@@ -150,10 +150,7 @@ impl Metadata<'_> {
         let is_payable = constructor.is_payable();
         let is_default = constructor.is_default();
         let constructor = constructor.callable();
-        let name = constructor
-            .name()
-            .map(ToString::to_string)
-            .unwrap_or_else(|| constructor.ident().to_string());
+        let name = constructor.normalized_name();
         let args = constructor.inputs().map(Self::generate_dispatch_argument);
         let storage_ident = self.contract.module().storage().ident();
         let ret_ty = Self::generate_constructor_return_type(storage_ident, selector_id);
@@ -218,10 +215,7 @@ impl Metadata<'_> {
                 let is_default = message.is_default();
                 let message = message.callable();
                 let mutates = message.receiver().is_ref_mut();
-                let name = message
-                    .name()
-                    .map(ToString::to_string)
-                    .unwrap_or_else(|| message.ident().to_string());
+                let name = message.normalized_name();
                 let args = message.inputs().map(Self::generate_dispatch_argument);
                 let cfg_attrs = message.get_cfg_attrs(span);
                 let ret_ty =
@@ -268,9 +262,7 @@ impl Metadata<'_> {
             .map(|((trait_ident, trait_path), message)| {
                 let message_span = message.span();
                 let message_name = message
-                    .name()
-                    .map(ToString::to_string)
-                    .unwrap_or_else(|| message.ident().to_string());
+                    .normalized_name();
                 let message_docs = message
                     .attrs()
                     .iter()
diff --git a/crates/ink/codegen/src/generator/sol/metadata.rs b/crates/ink/codegen/src/generator/sol/metadata.rs
index 89202450a9e..e6ff2559aac 100644
--- a/crates/ink/codegen/src/generator/sol/metadata.rs
+++ b/crates/ink/codegen/src/generator/sol/metadata.rs
@@ -73,10 +73,7 @@ impl SolidityMetadata<'_> {
             .impls()
             .flat_map(|item_impl| item_impl.iter_constructors())
             .map(|ctor| {
-                let name = ctor
-                    .name()
-                    .map(ToString::to_string)
-                    .unwrap_or_else(|| ctor.ident().to_string());
+                let name = ctor.normalized_name();
                 let inputs = params_info(ctor.inputs());
                 let is_payable = ctor.is_payable();
                 let is_default = ctor.is_default();
@@ -101,10 +98,7 @@ impl SolidityMetadata<'_> {
             .impls()
             .flat_map(|item_impl| item_impl.iter_messages())
             .map(|msg| {
-                let name = msg
-                    .name()
-                    .map(ToString::to_string)
-                    .unwrap_or_else(|| msg.ident().to_string());
+                let name = msg.normalized_name();
                 let inputs = params_info(msg.inputs());
                 let output = msg
                     .output()
diff --git a/crates/ink/codegen/src/generator/sol/utils.rs b/crates/ink/codegen/src/generator/sol/utils.rs
index 52bf36a81e6..8111339765b 100644
--- a/crates/ink/codegen/src/generator/sol/utils.rs
+++ b/crates/ink/codegen/src/generator/sol/utils.rs
@@ -51,10 +51,7 @@ pub fn sol_return_type(ty: &Type) -> TokenStream2 {
 
 /// Returns Solidity ABI compatible selector of an ink! message.
 pub fn selector(message: &Message) -> TokenStream2 {
-    let name = message
-        .name()
-        .map(ToString::to_string)
-        .unwrap_or_else(|| message.ident().to_string());
+    let name = message.normalized_name();
     let signature = call_signature(name, message.inputs());
     quote! {
         const {
diff --git a/crates/ink/codegen/src/generator/trait_def/message_builder.rs b/crates/ink/codegen/src/generator/trait_def/message_builder.rs
index f4e20253014..c7b60050b52 100644
--- a/crates/ink/codegen/src/generator/trait_def/message_builder.rs
+++ b/crates/ink/codegen/src/generator/trait_def/message_builder.rs
@@ -205,11 +205,9 @@ impl MessageBuilder<'_> {
                             (quote!([ #( #selector_bytes ),* ]), quote!(::ink::abi::Ink))
                         }
                         Abi::Sol => {
-                            let message_ident = message.ident();
-                            let signature = sol::utils::call_signature(
-                                message_ident.to_string(),
-                                message.inputs(),
-                            );
+                            let name = message.normalized_name();
+                            let signature =
+                                sol::utils::call_signature(name, message.inputs());
                             (
                                 quote!(::ink::codegen::sol::selector_bytes(#signature)),
                                 quote!(::ink::abi::Sol),
diff --git a/crates/ink/codegen/src/generator/trait_def/trait_registry.rs b/crates/ink/codegen/src/generator/trait_def/trait_registry.rs
index 2cb384453e3..199e11ca8a7 100644
--- a/crates/ink/codegen/src/generator/trait_def/trait_registry.rs
+++ b/crates/ink/codegen/src/generator/trait_def/trait_registry.rs
@@ -354,8 +354,8 @@ impl TraitRegistry<'_> {
                     )
                 }
                 Abi::Sol => {
-                    let ident_str = message.ident().to_string();
-                    let signature = sol::utils::call_signature(ident_str, message.inputs());
+                    let name = message.normalized_name();
+                    let signature = sol::utils::call_signature(name, message.inputs());
                     let selector_bytes = quote! {
                         ::ink::codegen::sol::selector_bytes(#signature)
                     };
diff --git a/crates/ink/ir/src/ir/item_impl/callable.rs b/crates/ink/ir/src/ir/item_impl/callable.rs
index c907e886976..6657b3e35c5 100644
--- a/crates/ink/ir/src/ir/item_impl/callable.rs
+++ b/crates/ink/ir/src/ir/item_impl/callable.rs
@@ -143,6 +143,12 @@ where
     fn name(&self) -> Option<&str> {
         <C as Callable>::name(self.callable)
     }
+
+    fn normalized_name(&self) -> String {
+        self.name()
+            .map(ToString::to_string)
+            .unwrap_or_else(|| self.ident().to_string())
+    }
 }
 
 impl<C> ::core::ops::Deref for CallableWithSelector<'_, C> {
@@ -201,6 +207,13 @@ pub trait Callable {
 
     /// Returns the function name override (if any).
     fn name(&self) -> Option<&str>;
+
+    /// Returns the "normalized" function name
+    ///
+    /// # Note
+    /// This returns the name override (if provided), otherwise the identifier is
+    /// returned.
+    fn normalized_name(&self) -> String;
 }
 
 /// Returns the composed selector of the ink! callable.
@@ -339,10 +352,7 @@ fn compose_selector_preimage<C>(item_impl: &ir::ItemImpl, callable: &C) -> Vec<u
 where
     C: Callable,
 {
-    let callable_name = callable
-        .name()
-        .map(|name| name.as_bytes().to_vec())
-        .unwrap_or_else(|| callable.ident().to_string().into_bytes());
+    let callable_name = callable.normalized_name().into_bytes();
     let namespace_bytes = item_impl
         .namespace()
         .map(|namespace| namespace.as_bytes().to_vec())
diff --git a/crates/ink/ir/src/ir/item_impl/constructor.rs b/crates/ink/ir/src/ir/item_impl/constructor.rs
index 89e212d188c..99d4472a9bf 100644
--- a/crates/ink/ir/src/ir/item_impl/constructor.rs
+++ b/crates/ink/ir/src/ir/item_impl/constructor.rs
@@ -251,6 +251,10 @@ impl Callable for Constructor {
     fn name(&self) -> Option<&str> {
         self.name.as_deref()
     }
+
+    fn normalized_name(&self) -> String {
+        self.normalized_name()
+    }
 }
 
 impl Constructor {
@@ -281,6 +285,17 @@ impl Constructor {
     pub fn name(&self) -> Option<&str> {
         self.name.as_deref()
     }
+
+    /// Returns the "normalized" function name
+    ///
+    /// # Note
+    /// This returns the name override (if provided), otherwise the identifier is
+    /// returned.
+    pub fn normalized_name(&self) -> String {
+        self.name()
+            .map(ToString::to_string)
+            .unwrap_or_else(|| self.ident().to_string())
+    }
 }
 
 #[cfg(test)]
diff --git a/crates/ink/ir/src/ir/item_impl/message.rs b/crates/ink/ir/src/ir/item_impl/message.rs
index d880418e87c..4b3950e193a 100644
--- a/crates/ink/ir/src/ir/item_impl/message.rs
+++ b/crates/ink/ir/src/ir/item_impl/message.rs
@@ -305,6 +305,10 @@ impl Callable for Message {
     fn name(&self) -> Option<&str> {
         self.name.as_deref()
     }
+
+    fn normalized_name(&self) -> String {
+        self.normalized_name()
+    }
 }
 
 impl Message {
@@ -370,7 +374,7 @@ impl Message {
     /// Although the above scenario is very unlikely since the local ID is computed
     /// solely by the identifier of the ink! message.
     pub fn local_id(&self) -> u32 {
-        utils::local_message_id(self.ident())
+        utils::local_message_id(&self.normalized_name())
     }
 
     /// Returns the identifier of the message with an additional `try_` prefix attached.
@@ -382,6 +386,17 @@ impl Message {
     pub fn name(&self) -> Option<&str> {
         self.name.as_deref()
     }
+
+    /// Returns the "normalized" function name
+    ///
+    /// # Note
+    /// This returns the name override (if provided), otherwise the identifier is
+    /// returned.
+    pub fn normalized_name(&self) -> String {
+        self.name()
+            .map(ToString::to_string)
+            .unwrap_or_else(|| self.ident().to_string())
+    }
 }
 
 #[cfg(test)]
diff --git a/crates/ink/ir/src/ir/trait_def/item/mod.rs b/crates/ink/ir/src/ir/trait_def/item/mod.rs
index ccc4a77bc4d..30b71a10580 100644
--- a/crates/ink/ir/src/ir/trait_def/item/mod.rs
+++ b/crates/ink/ir/src/ir/trait_def/item/mod.rs
@@ -373,9 +373,7 @@ impl InkItemTrait {
                     manual_selector
                 }
                 _ => {
-                    let name = ink_attrs
-                        .name()
-                        .unwrap_or_else(|| callable.ident().to_string());
+                    let name = callable.normalized_name();
                     Selector::compose(trait_prefix, name)
                 }
             };
diff --git a/crates/ink/ir/src/ir/trait_def/item/trait_item.rs b/crates/ink/ir/src/ir/trait_def/item/trait_item.rs
index d828154222e..a86f015c707 100644
--- a/crates/ink/ir/src/ir/trait_def/item/trait_item.rs
+++ b/crates/ink/ir/src/ir/trait_def/item/trait_item.rs
@@ -59,6 +59,24 @@ impl<'a> InkTraitItem<'a> {
             Self::Message(ink_trait_message) => Some(ink_trait_message),
         }
     }
+
+    /// Returns the function name override (if any).
+    pub fn name(&self) -> Option<String> {
+        match self {
+            Self::Message(message) => message.name(),
+        }
+    }
+
+    /// Returns the "normalized" function name
+    ///
+    /// # Note
+    /// This returns the name override (if provided), otherwise the identifier is
+    /// returned.
+    pub fn normalized_name(&self) -> String {
+        match self {
+            Self::Message(message) => message.normalized_name(),
+        }
+    }
 }
 
 /// A checked ink! message of an ink! trait definition.
@@ -173,7 +191,7 @@ impl<'a> InkTraitMessage<'a> {
     /// Although the above scenario is very unlikely since the local ID is computed
     /// solely by the identifier of the ink! message.
     pub fn local_id(&self) -> u32 {
-        utils::local_message_id(self.ident())
+        utils::local_message_id(&self.normalized_name())
     }
 
     /// Returns the span of the ink! message.
@@ -188,6 +206,20 @@ impl<'a> InkTraitMessage<'a> {
             .map(|receiver| receiver.mutability.is_some())
             .expect("encountered missing receiver for ink! message")
     }
+
+    /// Returns the function name override (if any).
+    pub fn name(&self) -> Option<String> {
+        self.ink_attrs().name()
+    }
+
+    /// Returns the "normalized" function name
+    ///
+    /// # Note
+    /// This returns the name override (if provided), otherwise the identifier is
+    /// returned.
+    pub fn normalized_name(&self) -> String {
+        self.name().unwrap_or_else(|| self.ident().to_string())
+    }
 }
 
 impl<'a> From<&'a InkTraitMessage<'a>> for InputsIter<'a> {
diff --git a/crates/ink/ir/src/ir/utils.rs b/crates/ink/ir/src/ir/utils.rs
index 16af4820acd..747d3d3dae0 100644
--- a/crates/ink/ir/src/ir/utils.rs
+++ b/crates/ink/ir/src/ir/utils.rs
@@ -58,9 +58,9 @@ pub fn ensure_pub_visibility(
 ///
 /// - The returned value is equal to the selector of the message identifier.
 /// - Used from within ink! trait definitions as well as ink! trait implementation blocks.
-pub fn local_message_id(ident: &syn::Ident) -> u32 {
-    let input = ident.to_string().into_bytes();
-    let selector = Selector::compute(&input);
+pub fn local_message_id(ident: &str) -> u32 {
+    let input = ident.as_bytes();
+    let selector = Selector::compute(input);
     selector.into_be_u32()
 }
 
diff --git a/crates/ink/tests/ui/abi/all/pass/trait-def-message-name-override.rs b/crates/ink/tests/ui/abi/all/pass/trait-def-message-name-override.rs
new file mode 100644
index 00000000000..2ff927be384
--- /dev/null
+++ b/crates/ink/tests/ui/abi/all/pass/trait-def-message-name-override.rs
@@ -0,0 +1,34 @@
+use ink::{
+    reflect::{
+        TraitDefinitionRegistry,
+        TraitMessageInfo,
+    },
+    selector_bytes,
+    selector_id,
+};
+use ink_env::DefaultEnvironment;
+
+#[ink::trait_definition]
+pub trait TraitDefinition {
+    #[ink(message, name = "myMessage")]
+    fn message(&self);
+}
+
+fn main() {
+    // Message selector and selector id both use the name override.
+    macro_rules! assert_selector_eq {
+        ( $message_id:expr, $expected_selector:expr $(,)? ) => {
+            assert_eq!(
+                <<TraitDefinitionRegistry<DefaultEnvironment> as TraitDefinition>::__ink_TraitInfo
+                    as TraitMessageInfo<{$message_id}>>::SELECTOR,
+                    $expected_selector
+            );
+        }
+    }
+
+    // ink! selector
+    assert_selector_eq!(selector_id!("myMessage"), selector_bytes!("TraitDefinition::myMessage"));
+
+    // `keccak256("myMessage()")` == `0x1b008a9f`
+    assert_selector_eq!(0x1b008a9f_u32, [0x1b, 0x00, 0x8a, 0x9f]);
+}
diff --git a/crates/ink/tests/ui/abi/sol/pass/trait-def-message-name-override.rs b/crates/ink/tests/ui/abi/sol/pass/trait-def-message-name-override.rs
new file mode 100644
index 00000000000..0bab71c7ddb
--- /dev/null
+++ b/crates/ink/tests/ui/abi/sol/pass/trait-def-message-name-override.rs
@@ -0,0 +1,29 @@
+use ink::{
+    reflect::{
+        TraitDefinitionRegistry,
+        TraitMessageInfo,
+    },
+};
+use ink_env::DefaultEnvironment;
+
+#[ink::trait_definition]
+pub trait TraitDefinition {
+    #[ink(message, name = "myMessage")]
+    fn message(&self);
+}
+
+fn main() {
+    // Message selector and selector id both use the name override.
+    macro_rules! assert_selector_eq {
+        ( $message_id:literal, $expected_selector:expr $(,)? ) => {
+            assert_eq!(
+                <<TraitDefinitionRegistry<DefaultEnvironment> as TraitDefinition>::__ink_TraitInfo
+                    as TraitMessageInfo<$message_id>>::SELECTOR,
+                    $expected_selector
+            );
+        }
+    }
+
+    // `keccak256("myMessage()")` == `0x1b008a9f`
+    assert_selector_eq!(0x1b008a9f_u32, [0x1b, 0x00, 0x8a, 0x9f]);
+}
diff --git a/crates/ink/tests/ui/trait_def/pass/message-name-override-namespace.rs b/crates/ink/tests/ui/trait_def/pass/message-name-override-namespace.rs
index de114300f09..e627381386b 100644
--- a/crates/ink/tests/ui/trait_def/pass/message-name-override-namespace.rs
+++ b/crates/ink/tests/ui/trait_def/pass/message-name-override-namespace.rs
@@ -15,6 +15,7 @@ pub trait TraitDefinition {
 }
 
 fn main() {
+    // Message selector and selector id both use the name override.
     macro_rules! assert_selector_eq {
         ( $message_id:literal, $expected_selector:expr $(,)? ) => {
             assert_eq!(
@@ -26,7 +27,7 @@ fn main() {
     }
 
     assert_selector_eq!(
-        "message",
+        "myMessage",
         selector_bytes!("foo::TraitDefinition::myMessage"),
     );
 }
diff --git a/crates/ink/tests/ui/trait_def/pass/message-name-override.rs b/crates/ink/tests/ui/trait_def/pass/message-name-override.rs
index 82d8b90e035..6ba09081b3f 100644
--- a/crates/ink/tests/ui/trait_def/pass/message-name-override.rs
+++ b/crates/ink/tests/ui/trait_def/pass/message-name-override.rs
@@ -15,6 +15,7 @@ pub trait TraitDefinition {
 }
 
 fn main() {
+    // Message selector and selector id both use the name override.
     macro_rules! assert_selector_eq {
         ( $message_id:literal, $expected_selector:expr $(,)? ) => {
             assert_eq!(
@@ -25,5 +26,5 @@ fn main() {
         }
     }
 
-    assert_selector_eq!("message", selector_bytes!("TraitDefinition::myMessage"),);
+    assert_selector_eq!("myMessage", selector_bytes!("TraitDefinition::myMessage"),);
 }
diff --git a/crates/ink/tests/ui/trait_def/pass/message-selector-precedence.rs b/crates/ink/tests/ui/trait_def/pass/message-selector-precedence.rs
index 0045f3d6f04..9875a666729 100644
--- a/crates/ink/tests/ui/trait_def/pass/message-selector-precedence.rs
+++ b/crates/ink/tests/ui/trait_def/pass/message-selector-precedence.rs
@@ -14,6 +14,7 @@ pub trait TraitDefinition {
 }
 
 fn main() {
+    // Custom selector (i.e `selector = 1`) takes precedence over name override
     macro_rules! assert_selector_eq {
         ( $message_id:literal, $expected_selector:expr $(,)? ) => {
             assert_eq!(
@@ -24,5 +25,5 @@ fn main() {
         }
     }
 
-    assert_selector_eq!("message", [0, 0, 0, 1]);
+    assert_selector_eq!("myMessage", [0, 0, 0, 1]);
 }