--- a/llvm/tools/clang/lib/Sema/SemaTemplate.cpp
+++ b/llvm/tools/clang/lib/Sema/SemaTemplate.cpp
@@ -441,9 +441,6 @@ bool Sema::LookupTemplateName(LookupResult &Found,
     IsDependent |= Found.wasNotFoundInCurrentInstantiation();
   }

-  if (Found.isAmbiguous())
-    return false;
-
   if (ATK && !SS.isSet() && ObjectType.isNull() && TemplateKWLoc.isInvalid()) {
     // C++2a [temp.names]p2:
     //   A name is also considered to refer to a template if it is an