diff --git a/lib/Sema/SemaLookup.cpp b/lib/Sema/SemaLookup.cpp
index e6f3d9e..4d25f5b 100644
--- a/lib/Sema/SemaLookup.cpp
+++ b/lib/Sema/SemaLookup.cpp
@@ -325,7 +325,9 @@
   if (ObjCCompatibleAliasDecl *Alias 
         = dyn_cast_or_null<ObjCCompatibleAliasDecl>(D))
     D = Alias->getClassInterface();
-
+  if (UsingDecl *UD = dyn_cast_or_null<UsingDecl>(D))
+    D = UD->getTargetDecl();
+  
   LookupResult Result;
   Result.StoredKind = (D && isa<OverloadedFunctionDecl>(D))?
     OverloadedDeclSingleDecl : SingleDecl;
@@ -358,7 +360,9 @@
   if (ObjCCompatibleAliasDecl *Alias 
         = dyn_cast_or_null<ObjCCompatibleAliasDecl>(D))
     D = Alias->getClassInterface();
-    
+  if (UsingDecl *UD = dyn_cast_or_null<UsingDecl>(D))
+    D = UD->getTargetDecl();
+
   Result.StoredKind = SingleDecl;
   Result.First = reinterpret_cast<uintptr_t>(D);
   Result.Last = 0;