diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index d89365c..d5844f4 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -3514,7 +3514,8 @@
 
   IdentifierInfo *Name = Attr.getParameterName();
   if (!Name) {
-    S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name);
+    S.Diag(Attr.getLoc(), diag::err_attribute_argument_type) << Attr.getName()
+      << AANT_ArgumentIdentifier;
     return;
   }