diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 2f6b131..db616c5 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -485,7 +485,7 @@
     return RValue::get(Address);
   }
       
-  case Builtin::BIobjc_memmove_collectable: {
+  case Builtin::BI__builtin_objc_memmove_collectable: {
     Value *Address = EmitScalarExpr(E->getArg(0));
     Value *SrcAddr = EmitScalarExpr(E->getArg(1));
     Value *SizeVal = EmitScalarExpr(E->getArg(2));