diff --git a/openflow_input/bsn_vrf_counter b/openflow_input/bsn_vrf_counter
index a3a25fa..7676e69 100644
--- a/openflow_input/bsn_vrf_counter
+++ b/openflow_input/bsn_vrf_counter
@@ -30,7 +30,7 @@
 
 #version 4
 
-enum ofp_bsn_vrf_counter_constants {
+enum ofp_bsn_vrf_counter_constants(wire_type=uint32_t) {
     OFP_BSN_VRF_ALL = 0xffffffff,
 };