diff --git a/lib/api/src/import_object.rs b/lib/api/src/import_object.rs
index b38f4aa8d2b..1d507baa7c9 100644
--- a/lib/api/src/import_object.rs
+++ b/lib/api/src/import_object.rs
@@ -145,20 +145,6 @@ impl IntoIterator for ImportObject {
 
 impl fmt::Debug for ImportObject {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        enum SecretOption {
-            None,
-            Some,
-        }
-
-        impl fmt::Debug for SecretOption {
-            fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-                match self {
-                    Self::None => write!(f, "None"),
-                    Self::Some => write!(f, "Some(...)"),
-                }
-            }
-        }
-
         enum SecretMap {
             Empty,
             Some(usize),
diff --git a/lib/wasmer-types/src/types.rs b/lib/wasmer-types/src/types.rs
index 6ed80e73ce5..6a9b9b9ab4d 100644
--- a/lib/wasmer-types/src/types.rs
+++ b/lib/wasmer-types/src/types.rs
@@ -238,12 +238,12 @@ impl FunctionType {
     /// Creates a new Function Type with the given parameter and return types.
     pub fn new<Params, Returns>(params: Params, returns: Returns) -> Self
     where
-        Params: Into<Vec<Type>>,
-        Returns: Into<Vec<Type>>,
+        Params: Into<Box<[Type]>>,
+        Returns: Into<Box<[Type]>>,
     {
         Self {
-            params: params.into().into_boxed_slice(),
-            results: returns.into().into_boxed_slice(),
+            params: params.into(),
+            results: returns.into(),
         }
     }