diff --git a/c-programming/io/pure_getline.h b/c-programming/io/pure_getline.h
index 6fcf5c7..943f85d 100644
--- a/c-programming/io/pure_getline.h
+++ b/c-programming/io/pure_getline.h
@@ -5,14 +5,14 @@
  * License: Creative Commons Zero 1.0 Universal
  */
 
+#ifndef _PURE_GETLINE_H
+#define _PURE_GETLINE_H
+
 #include <errno.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 
-#ifndef _PURE_GETLINE_H
-#define _PURE_GETLINE_H
-
 bool pure_getline(char** output);
 
 #endif /* _PURE_GETLINE_H */