diff --git a/src/bin/unmount.c b/src/bin/unmount.c
index 1ad484022e..2b6fe20fd0 100644
--- a/src/bin/unmount.c
+++ b/src/bin/unmount.c
@@ -9,9 +9,10 @@
 #include <fs_volume.h>
 
 #include <sys/stat.h>
-#include <unistd.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 
 static void