--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -1354,7 +1354,7 @@
 		TAILQ_FOREACH(v, &ic->ic_vaps, iv_next)
 			id_mask |= (1 << ATH_GET_VAP_ID(v->iv_myaddr));
 
-		for (id = 1; id < ath_maxvaps; id++) {
+		for (id = 0; id < ath_maxvaps; id++) {
 			/* get the first available slot */
 			if ((id_mask & (1 << id)) == 0) {
 				ATH_SET_VAP_BSSID(vap->iv_myaddr, id);
