diff --git a/vtysh/vtysh_main.c b/vtysh/vtysh_main.c
index 90fc1570e48c..7d71080bebd7 100644
--- a/vtysh/vtysh_main.c
+++ b/vtysh/vtysh_main.c
@@ -42,6 +42,7 @@
 
 #include "vtysh/vtysh.h"
 #include "vtysh/vtysh_user.h"
+#include "vtysh/vtysh_extensions.h"
 
 /* VTY shell program name. */
 char *progname;