diff --git a/lib/checkclass.cpp b/lib/checkclass.cpp
index 9d3fa47fc..37a345a93 100644
--- a/lib/checkclass.cpp
+++ b/lib/checkclass.cpp
@@ -2988,7 +2988,8 @@ static std::vector<DuplMemberFuncInfo> getDuplInheritedMemberFunctionsRecursive(
                 if (classFuncIt.name() == parentClassFuncIt.name() &&
                     (parentClassFuncIt.access != AccessControl::Private || !skipPrivate) &&
                     !classFuncIt.isConstructor() && !classFuncIt.isDestructor() &&
-                    classFuncIt.argsMatch(parentClassIt.type->classScope, parentClassFuncIt.argDef, classFuncIt.argDef, emptyString, 0))
+                    classFuncIt.argsMatch(parentClassIt.type->classScope, parentClassFuncIt.argDef, classFuncIt.argDef, emptyString, 0) &&
+                    (classFuncIt.isConst() == parentClassFuncIt.isConst() || Function::returnsConst(&classFuncIt) == Function::returnsConst(&parentClassFuncIt)))
                     results.emplace_back(&classFuncIt, &parentClassFuncIt, &parentClassIt);
             }
         }
diff --git a/test/testclass.cpp b/test/testclass.cpp
index df4a5b531..528188947 100644
--- a/test/testclass.cpp
+++ b/test/testclass.cpp
@@ -704,6 +704,14 @@ private:
                                   "    T* operator->() const { return (T*)p; }\n"
                                   "};\n");
         ASSERT_EQUALS("", errout.str());
+
+        checkDuplInheritedMembers("struct B { virtual int& get() = 0; };\n" // #12311
+                                  "struct D : B {\n"
+                                  "    int i{};\n"
+                                  "    int& get() override { return i; }\n"
+                                  "    const int& get() const { return i; }\n"
+                                  "};\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
 #define checkCopyConstructor(code) checkCopyConstructor_(code, __FILE__, __LINE__)