diff --git a/stack.h b/stack.h
index a8f99c1dd7736f712c2ff51909186c272573c50e..48803dd79aada27fb8a79b709687c74fae629c99 100644
--- a/stack.h
+++ b/stack.h
@@ -1,8 +1,10 @@
-#include <stdbool.h>
 
 #ifndef _STACK_H_
 #define _STACK_H_
 
+#include <stdbool.h>
+
+
 typedef struct _stack {
     int *data;
     int capacity;