diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index cbd4f58..0fa66c4 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -485,7 +485,7 @@
   void DiagnoseUnusedParameters(InputIterator Param, InputIterator ParamEnd) {
     for (; Param != ParamEnd; ++Param) {
       if (!(*Param)->isUsed() && (*Param)->getDeclName() && 
-          !(*Param)->template hasAttr<UnusedAttr>(Context))
+          !(*Param)->template hasAttr<UnusedAttr>())
         Diag((*Param)->getLocation(), diag::warn_unused_parameter)
           << (*Param)->getDeclName();
     }