diff --git a/cmd-parse.y b/cmd-parse.y
index 0a627268..402ec806 100644
--- a/cmd-parse.y
+++ b/cmd-parse.y
@@ -23,6 +23,7 @@
 #include <ctype.h>
 #include <errno.h>
 #include <pwd.h>
+#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>