1 files changed, 1 insertions, 0 deletions

diff --git a/procps/free.c b/procps/free.c
index f2e746e39..4dd99ab49 100644
--- a/procps/free.c
+++ b/procps/free.c
@@ -24,6 +24,7 @@
 #include "busybox.h"
 #include <stdio.h>
 #include <errno.h>
+#include <stdlib.h>
 
 extern int free_main(int argc, char **argv)
 {