diff --git a/llvm/lib/TableGen/TGPreprocessor.h b/llvm/lib/TableGen/TGPreprocessor.h
index 2b9ed9c1566f..fe7e2a34bf3d 100644
--- a/llvm/lib/TableGen/TGPreprocessor.h
+++ b/llvm/lib/TableGen/TGPreprocessor.h
@@ -40,7 +40,7 @@ class TGPreprocessor {
 
 public:
   TGPreprocessor(SourceMgr &SM, tool_output_file &O)
-    : SrcMgr(SM), Out(O), Lexer(NULL), CurRecords(NULL) {
+    : SrcMgr(SM), Out(O), Lexer(0), CurRecords(0) {
   }
 
   /// PreprocessFile - Main entrypoint for preprocess a tblgen file.  These