1 files changed, 3 insertions, 2 deletions
diff --git a/src/ast.h b/src/ast.h
index 6124de8..44bc597 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -1,7 +1,8 @@
 // http://www.hpcs.cs.tsukuba.ac.jp/~msato/lecture-note/comp-lecture/tiny-c/AST.h
 
-#ifndef _AST_
-#define _AST_
+#ifndef AST_H_
+#define AST_H_
+#include "config.h"
 
 typedef enum {
   AST_SYM=0, AST_NAME, AST_INTVAR, AST_AGENT,