diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 45f239a..b595363 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -315,9 +315,9 @@
   
   void EmitBlock(llvm::BasicBlock *BB);
   
-  /// WarnUnsupported - Print out a warning that codegen doesn't support the
+  /// ErrorUnsupported - Print out an error that codegen doesn't support the
   /// specified stmt yet.
-  void WarnUnsupported(const Stmt *S, const char *Type);
+  void ErrorUnsupported(const Stmt *S, const char *Type);
 
   //===--------------------------------------------------------------------===//
   //                                  Helpers