diff --git a/src/vnet/devices/tap/tapv2.api b/src/vnet/devices/tap/tapv2.api
index bf53d1bc6fe..fd3cd13860e 100644
--- a/src/vnet/devices/tap/tapv2.api
+++ b/src/vnet/devices/tap/tapv2.api
@@ -34,6 +34,7 @@ enum tap_flags {
         TAP_API_FLAG_GRO_COALESCE = 32, /* enable packet coalescing on tx side, provided gso enabled */
         TAP_API_FLAG_PACKED = 64 [backwards_compatible], /* enable packed ring support */
         TAP_API_FLAG_IN_ORDER = 128 [backwards_compatible], /* enable in-order desc support */
+        TAP_API_FLAG_CONSISTENT_QP = 256 [backwards_compatible], /* enable consistent-qp */
 };
 
 /** \brief Initialize a new tap interface with the given parameters