diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 652fcdf..f724524 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -39,7 +39,7 @@
 {  
   if (size_reserve > 0) Types.reserve(size_reserve);    
   InitBuiltinTypes();
-  BuiltinInfo.InitializeBuiltins(idents, Target);
+  BuiltinInfo.InitializeBuiltins(idents, Target, LangOpts.Freestanding);
   TUDecl = TranslationUnitDecl::Create(*this);
 }