diff --git a/Makefile.am b/Makefile.am
index ba1e6aa..59d6e54 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -22,7 +22,6 @@ endif
 r3_includedir = $(includedir)/r3
 r3_include_HEADERS = \
 	include/r3.h \
-	include/r3_define.h \
 	include/r3_list.h \
 	include/r3_slug.h \
 	include/r3_gvc.h \
diff --git a/configure.ac b/configure.ac
index df52731..449dfbd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,6 +10,7 @@ AC_PROG_CC
 AC_PROG_CC_STDC
 AC_PROG_CXX
 AC_PROG_INSTALL
+AC_HEADER_STDBOOL
 
 # older debian
 AC_PROG_LIBTOOL
diff --git a/include/r3.h b/include/r3.h
index 9445beb..592d64d 100644
--- a/include/r3.h
+++ b/include/r3.h
@@ -11,11 +11,31 @@
 #include <stdlib.h>
 #include <string.h>
 #include <pcre.h>
+
+
+
+#ifdef HAVE_STDBOOL_H
+
 #include <stdbool.h>
-#include "r3_define.h"
+
+#else
+
+#if !defined(bool) && !defined(__cplusplus)
+typedef unsigned char bool;
+#endif
+#ifndef FALSE
+#    define FALSE 0
+#endif
+#ifndef TRUE
+#    define TRUE 1
+#endif
+
+#endif
+
 #include "str_array.h"
 #include "r3_slug.h"
 
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/include/r3_define.h b/include/r3_define.h
deleted file mode 100644
index f0903ee..0000000
--- a/include/r3_define.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * r3_define.h
- * Copyright (C) 2014 c9s <yoanlin93@gmail.com>
- *
- * Distributed under terms of the MIT license.
- */
-
-#ifndef DEFINE_H
-#define DEFINE_H
-#include <stdbool.h>
-#if !defined(bool) && !defined(__cplusplus)
-typedef unsigned char bool;
-#endif
-#ifndef FALSE
-#    define FALSE 0
-#endif
-#ifndef TRUE
-#    define TRUE 1
-#endif
-#endif /* !DEFINE_H */
diff --git a/package.json b/package.json
index 061026a..7a6f5a8 100644
--- a/package.json
+++ b/package.json
@@ -5,5 +5,5 @@
   "description": "high-performance path dispatching library",
   "keywords": ["path", "dispatch", "performance", "r3", "c9s"],
   "license": "MIT",
-  "src": ["3rdparty/zmalloc.c", "3rdparty/zmalloc.h", "include/r3.h", "include/r3.hpp", "include/r3_define.h", "include/r3_gvc.h", "include/r3_json.h", "include/r3_list.h", "include/r3_slug.h", "include/str_array.h", "src/edge.c", "src/gvc.c", "src/json.c", "src/list.c", "src/match_entry.c", "src/node.c", "src/slug.c", "src/slug.h", "src/str.c", "src/token.c"]
+  "src": ["3rdparty/zmalloc.c", "3rdparty/zmalloc.h", "include/r3.h", "include/r3.hpp", "include/r3_gvc.h", "include/r3_json.h", "include/r3_list.h", "include/r3_slug.h", "include/str_array.h", "src/edge.c", "src/gvc.c", "src/json.c", "src/list.c", "src/match_entry.c", "src/node.c", "src/slug.c", "src/slug.h", "src/str.c", "src/token.c"]
 }