diff --git a/utils/TableGen/TGLexer.cpp b/utils/TableGen/TGLexer.cpp
index a1ccdbe68fc..27669ca4b22 100644
--- a/utils/TableGen/TGLexer.cpp
+++ b/utils/TableGen/TGLexer.cpp
@@ -280,7 +280,7 @@ bool TGLexer::LexInclude() {
 
   
   CurBuffer = SrcMgr.AddIncludeFile(Filename, SMLoc::getFromPointer(CurPtr));
-  if (CurBuffer == ~0U) {
+  if (CurBuffer == -1) {
     PrintError(getLoc(), "Could not find include file '" + Filename + "'");
     return true;
   }
diff --git a/utils/TableGen/TGLexer.h b/utils/TableGen/TGLexer.h
index 2d1958e8800..80405ac0bf4 100644
--- a/utils/TableGen/TGLexer.h
+++ b/utils/TableGen/TGLexer.h
@@ -17,7 +17,6 @@
 #include "llvm/Support/DataTypes.h"
 #include <vector>
 #include <string>
-#include <iosfwd>
 #include <cassert>
 
 namespace llvm {