diff --git a/openbsc/src/osmo-bsc_nat/bsc_ussd.c b/openbsc/src/osmo-bsc_nat/bsc_ussd.c
index 2241896..1082414 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_ussd.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_ussd.c
@@ -382,7 +382,7 @@
 	 * decode if the connection was created for USSD, we do have a USSD access
 	 * list, a query, a IMSI and such...
 	 */
-	if (con->con_type != NAT_CON_TYPE_SSA)
+	if (con->filter_state.con_type != FLT_CON_TYPE_SSA)
 		return 0;
 
 	if (!con->filter_state.imsi)