diff --git a/21st_century_c/process_dir.c b/21st_century_c/process_dir.c
index 8132eb5..c05b5a2 100644
--- a/21st_century_c/process_dir.c
+++ b/21st_century_c/process_dir.c
@@ -1,8 +1,11 @@
-#include "process_dir.h"
-#include <dirent.h>
+#define _GNU_SOURCE
 #include <stdio.h>
+
+#include <dirent.h>
 #include <stdlib.h>
 
+#include "process_dir.h"
+
 
 int process_dir_r(filestruct level) {
   if (!level.fullname) {
@@ -48,6 +51,6 @@ int process_dir_r(filestruct level) {
       free(next_level.fullname);
     }
   }
-  closedir(current);
+  (void) closedir(current);
   return errct;
 }