diff --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
index 02ad36d47909..a519f78fc45d 100644
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -587,7 +587,8 @@ bool CXXMethodDecl::isUsualDeallocationFunction() const {
   //   then this function is a usual deallocation function.
   ASTContext &Context = getASTContext();
   if (getNumParams() != 2 ||
-      !Context.hasSameType(getParamDecl(1)->getType(), Context.getSizeType()))
+      !Context.hasSameUnqualifiedType(getParamDecl(1)->getType(),
+                                      Context.getSizeType()))
     return false;
                  
   // This function is a usual deallocation function if there are no 
diff --git a/clang/test/SemaCXX/new-delete.cpp b/clang/test/SemaCXX/new-delete.cpp
index 6f8955534311..acd4a23cb35a 100644
--- a/clang/test/SemaCXX/new-delete.cpp
+++ b/clang/test/SemaCXX/new-delete.cpp
@@ -217,6 +217,14 @@ static void* f(void* g)
     return new (g) X13();
 }
 
+class X14 {
+  static void operator delete(void*, const size_t);
+};
+
+void f(X14 *x14a, X14 *x14b) {
+  delete x14a;
+}
+
 namespace PR5918 { // Look for template operator new overloads.
   struct S { template<typename T> static void* operator new(size_t, T); };
   void test() {