diff --git a/vtysh/vtysh_main.c b/vtysh/vtysh_main.c
index b1299780db..464d82cf7f 100644
--- a/vtysh/vtysh_main.c
+++ b/vtysh/vtysh_main.c
@@ -5,6 +5,7 @@
 
 #include <zebra.h>
 
+#include <fcntl.h>
 #include <signal.h>
 #include <sys/stat.h>
 #include <sys/un.h>