1 files changed, 1 insertions, 0 deletions
diff --git a/ls.c b/ls.c
index 4b225d6..affa48c 100644
--- a/ls.c
+++ b/ls.c
@@ -59,6 +59,7 @@ static const int COLUMN_GAP = 2;			/* includes the file type char, if present */
 #include <time.h>
 #endif
 #include <string.h>
+#include <stdlib.h>
 
 #include <fcntl.h>
 #include <signal.h>