diff --git a/poxml/antlr/antlr/CharScanner.h b/poxml/antlr/antlr/CharScanner.h
index 82766f1f..ece0b5b3 100644
--- a/poxml/antlr/antlr/CharScanner.h
+++ b/poxml/antlr/antlr/CharScanner.h
@@ -36,14 +36,15 @@
  */
 
 #include <cstdio>
+#include <functional>
+#include <map>
+
 #include "antlr/config.h"
 #include "antlr/TokenStream.h"
 #include "antlr/RecognitionException.h"
 #include "antlr/InputBuffer.h"
 #include "antlr/BitSet.h"
 #include "antlr/LexerSharedInputState.h"
-#include <map>
-#include <cstdio>
 
 ANTLR_BEGIN_NAMESPACE(antlr)