diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index e3c8597..65f7444 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -1370,9 +1370,7 @@
     /// C99 6.2.2p4-5 and C++ [basic.link]p6.
     LookupRedeclarationWithLinkage,
     /// Look up the name of an Objective-C protocol.
-    LookupObjCProtocolName,
-    /// Look up the name of an Objective-C implementation
-    LookupObjCImplementationName
+    LookupObjCProtocolName
   };
 
   /// \brief Specifies whether (or how) name lookup is being performed for a