diff --git a/lib/vhost/rte_vhost/vhost_user.h b/lib/vhost/rte_vhost/vhost_user.h
index 702637fdc..c3a9546a2 100644
--- a/lib/vhost/rte_vhost/vhost_user.h
+++ b/lib/vhost/rte_vhost/vhost_user.h
@@ -53,12 +53,14 @@
 #define VHOST_USER_PROTOCOL_F_RARP	2
 #define VHOST_USER_PROTOCOL_F_REPLY_ACK	3
 #define VHOST_USER_PROTOCOL_F_NET_MTU 4
+#define VHOST_USER_PROTOCOL_F_CONFIG 9
 
 #define VHOST_USER_PROTOCOL_FEATURES	((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
 					 (1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) |\
 					 (1ULL << VHOST_USER_PROTOCOL_F_RARP) | \
 					 (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK) | \
-					 (1ULL << VHOST_USER_PROTOCOL_F_NET_MTU))
+					 (1ULL << VHOST_USER_PROTOCOL_F_NET_MTU) | \
+					 (1ULL << VHOST_USER_PROTOCOL_F_CONFIG))
 
 typedef enum VhostUserRequest {
 	VHOST_USER_NONE = 0,