diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index cb80a69..35636e7 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -1105,7 +1105,8 @@
       (!TemplateParameterListsAreEqual(NewTemplate->getTemplateParameters(),
                                        OldTemplate->getTemplateParameters(),
                                        false, TPL_TemplateMatch) ||
-       OldType->getReturnType() != NewType->getReturnType()))
+       !Context.hasSameType(Old->getDeclaredReturnType(),
+                            New->getDeclaredReturnType())))
     return true;
 
   // If the function is a class member, its signature includes the