diff --git a/src/language/validation/names.ts b/src/language/validation/names.ts
index eeed27201..c9557ca2d 100644
--- a/src/language/validation/names.ts
+++ b/src/language/validation/names.ts
@@ -21,6 +21,7 @@ import {
     typeParametersOrEmpty,
     enumVariantsOrEmpty,
 } from '../helpers/shortcuts.js';
+import { isStatic } from '../helpers/checks.js';
 
 export const CODE_NAME_BLOCK_LAMBDA_PREFIX = 'name/block-lambda-prefix';
 export const CODE_NAME_CASING = 'name/casing';
@@ -181,7 +182,11 @@ export const classMustContainUniqueNames = (node: SdsClass, accept: ValidationAc
         accept,
     );
 
-    namesMustBeUnique(classMembersOrEmpty(node), (name) => `A member with name '${name}' exists already.`, accept);
+    const instanceMembers = classMembersOrEmpty(node, (it) => !isStatic(it));
+    namesMustBeUnique(instanceMembers, (name) => `An instance member with name '${name}' exists already.`, accept);
+
+    const staticMembers = classMembersOrEmpty(node, isStatic);
+    namesMustBeUnique(staticMembers, (name) => `A static member with name '${name}' exists already.`, accept);
 };
 
 export const enumMustContainUniqueNames = (node: SdsEnum, accept: ValidationAcceptor): void => {
diff --git a/tests/resources/validation/names/duplicates/in class/main.sdstest b/tests/resources/validation/names/duplicates/in class/main.sdstest
index ba178f8db..650707e04 100644
--- a/tests/resources/validation/names/duplicates/in class/main.sdstest	
+++ b/tests/resources/validation/names/duplicates/in class/main.sdstest	
@@ -23,104 +23,219 @@ class MyClass1<
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »parameterAndMember«: Int,
 ) {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
-    attr »duplicateAttribute«: Int
-    // $TEST$ error "A member with name 'duplicateAttribute' exists already."
-    attr »duplicateAttribute«: Int
-	// $TEST$ no error r"A member with name '\w*' exists already\."
-    attr »uniqueAttribute«: Int
-
-    // $TEST$ no error r"A member with name '\w*' exists already\."
+	// $TEST$ no error r"An instance member with name '\w*' exists already\."
+    attr »duplicateInstanceAttribute«: Int
+    // $TEST$ error "An instance member with name 'duplicateInstanceAttribute' exists already."
+    attr »duplicateInstanceAttribute«: Int
+	// $TEST$ no error r"An instance member with name '\w*' exists already\."
+    attr »uniqueInstanceAttribute«: Int
+
+	// $TEST$ no error r"A static member with name '\w*' exists already\."
+    static attr »duplicateStaticAttribute«: Int
+    // $TEST$ error "A static member with name 'duplicateStaticAttribute' exists already."
+    static attr »duplicateStaticAttribute«: Int
+	// $TEST$ no error r"A static member with name '\w*' exists already\."
+    static attr »uniqueStaticAttribute«: Int
+
+    // $TEST$ no error r"A static member with name '\w*' exists already\."
     class »DuplicateClass«
-    // $TEST$ error "A member with name 'DuplicateClass' exists already."
+    // $TEST$ error "A static member with name 'DuplicateClass' exists already."
     class »DuplicateClass«
-    // $TEST$ no error r"A member with name '\w*' exists already\."
+    // $TEST$ no error r"A static member with name '\w*' exists already\."
     class »UniqueClass«
 
-    // $TEST$ no error r"A member with name '\w*' exists already\."
+    // $TEST$ no error r"A static member with name '\w*' exists already\."
     enum »DuplicateEnum«
-    // $TEST$ error "A member with name 'DuplicateEnum' exists already."
+    // $TEST$ error "A static member with name 'DuplicateEnum' exists already."
     enum »DuplicateEnum«
-    // $TEST$ no error r"A member with name '\w*' exists already\."
+    // $TEST$ no error r"A static member with name '\w*' exists already\."
     enum »UniqueEnum«
 
-    // $TEST$ no error r"A member with name '\w*' exists already\."
-    fun »duplicateFun«()
-    // $TEST$ error "A member with name 'duplicateFun' exists already."
-    fun »duplicateFun«()
-    // $TEST$ no error r"A member with name '\w*' exists already\."
-    fun »uniqueFun«()
-
-    // $TEST$ no error r"A member with name '\w*' exists already\."
-    attr »duplicateMember«: Int
-    // $TEST$ error "A member with name 'duplicateMember' exists already."
-    class »duplicateMember«
-    // $TEST$ error "A member with name 'duplicateMember' exists already."
-    enum »duplicateMember«
-    // $TEST$ error "A member with name 'duplicateMember' exists already."
-    fun »duplicateMember«()
+    // $TEST$ no error r"An instance member with name '\w*' exists already\."
+    fun »duplicateInstanceMethod«()
+    // $TEST$ error "An instance member with name 'duplicateInstanceMethod' exists already."
+    fun »duplicateInstanceMethod«()
+    // $TEST$ no error r"An instance member with name '\w*' exists already\."
+    fun »uniqueInstanceMethod«()
+
+    // $TEST$ no error r"A static member with name '\w*' exists already\."
+    static fun »duplicateStaticMethod«()
+    // $TEST$ error "A static member with name 'duplicateStaticMethod' exists already."
+    static fun »duplicateStaticMethod«()
+    // $TEST$ no error r"A static member with name '\w*' exists already\."
+    static fun »uniqueStaticMethod«()
+
+    // $TEST$ no error r"An instance member with name '\w*' exists already\."
+    attr »duplicateInstanceMember«: Int
+    // $TEST$ error "An instance member with name 'duplicateInstanceMember' exists already."
+    fun »duplicateInstanceMember«()
+
+    // $TEST$ no error r"A static member with name '\w*' exists already\."
+    static attr »duplicateStaticMember«: Int
+    // $TEST$ error "A static member with name 'duplicateStaticMember' exists already."
+    class »duplicateStaticMember«
+    // $TEST$ error "A static member with name 'duplicateStaticMember' exists already."
+    enum »duplicateStaticMember«
+    // $TEST$ error "A static member with name 'duplicateStaticMember' exists already."
+    static fun »duplicateStaticMember«()
 }
 
 class MyClass2<
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »TypeParameterAndMember«,
 > {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
     attr »TypeParameterAndMember«: Int
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »instanceAndStaticMember«: Int
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static attr »instanceAndStaticMember«: Int
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static attr »staticAndInstanceMember«: Int
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »staticAndInstanceMember«: Int
 }
 
 class MyClass3<
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »TypeParameterAndMember«,
 > {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
-    class »TypeParameterAndMember«
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
+    static attr »TypeParameterAndMember«: Int
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »instanceAndStaticMember«: Int
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    class »instanceAndStaticMember«
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    class »staticAndInstanceMember«
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »staticAndInstanceMember«: Int
 }
 
 class MyClass4<
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »TypeParameterAndMember«,
 > {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
-    enum »TypeParameterAndMember«
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
+    class »TypeParameterAndMember«
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »instanceAndStaticMember«: Int
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    enum »instanceAndStaticMember«
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    enum »staticAndInstanceMember«
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »staticAndInstanceMember«: Int
 }
 
 class MyClass5<
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »TypeParameterAndMember«,
 > {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
+    enum »TypeParameterAndMember«
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »instanceAndStaticMember«: Int
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static fun »instanceAndStaticMember«()
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static fun »staticAndInstanceMember«()
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    attr »staticAndInstanceMember«: Int
+}
+
+class MyClass6<
+    // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
+    »TypeParameterAndMember«,
+> {
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »TypeParameterAndMember«()
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »instanceAndStaticMember«()
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static attr »instanceAndStaticMember«: Int
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static attr »staticAndInstanceMember«: Int
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »staticAndInstanceMember«()
+}
+
+class MyClass7<
+    // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
+    »TypeParameterAndMember«,
+> {
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
     fun »TypeParameterAndMember«()
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »instanceAndStaticMember«()
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    class »instanceAndStaticMember«
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    class »staticAndInstanceMember«
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »staticAndInstanceMember«()
 }
 
-class MyClass6(
+class MyClass8(
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »parameterAndMember«: Int,
 ) {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
     attr »parameterAndMember«: Int
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »instanceAndStaticMember«()
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    enum »instanceAndStaticMember«
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    enum »staticAndInstanceMember«
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »staticAndInstanceMember«()
 }
 
-class MyClass7(
+class MyClass9(
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »parameterAndMember«: Int,
 ) {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
     class »parameterAndMember«
+
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »instanceAndStaticMember«()
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static fun »instanceAndStaticMember«()
+
+    // $TEST$ no error "r"A.*member with name '\w*' exists already\."
+    static fun »staticAndInstanceMember«()
+    // $TEST$ no error r"A.*member with name '\w*' exists already\."
+    fun »staticAndInstanceMember«()
 }
 
-class MyClass8(
+class MyClass10(
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »parameterAndMember«: Int,
 ) {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
     enum »parameterAndMember«
 }
 
-class MyClass9(
+class MyClass11(
     // $TEST$ no error r"A type parameter or parameter with name '\w*' exists already\."
     »parameterAndMember«: Int,
 ) {
-	// $TEST$ no error r"A member with name '\w*' exists already\."
+	// $TEST$ no error r"A.*member with name '\w*' exists already\."
     fun »parameterAndMember«()
 }