diff --git a/src/microrl.h b/src/microrl.h
index 3831afe..c2bdba4 100644
--- a/src/microrl.h
+++ b/src/microrl.h
@@ -3,8 +3,7 @@
 
 #include "config.h"
 
-#define true  1
-#define false 0
+#include <stdbool.h>
 
  /* define the Key codes */
 #define KEY_NUL 0 /**< ^@ Null character */