diff --git a/src/ap/sta_info.c b/src/ap/sta_info.c
index 6704c09c0..016b9b6ac 100644
--- a/src/ap/sta_info.c
+++ b/src/ap/sta_info.c
@@ -232,7 +232,8 @@ void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 	wpa_auth_sta_deinit(sta->wpa_sm);
 	rsn_preauth_free_station(hapd, sta);
 #ifndef CONFIG_NO_RADIUS
-	radius_client_flush_auth(hapd->radius, sta->addr);
+	if (hapd->radius)
+		radius_client_flush_auth(hapd->radius, sta->addr);
 #endif /* CONFIG_NO_RADIUS */
 
 	os_free(sta->last_assoc_req);