diff --git a/src/wps/wps_registrar.c b/src/wps/wps_registrar.c
index b24836e..11e7e84 100644
--- a/src/wps/wps_registrar.c
+++ b/src/wps/wps_registrar.c
@@ -1298,7 +1298,7 @@
 	    wps_build_uuid_e(probe, reg->wps->uuid) ||
 	    wps_build_device_attrs(&reg->wps->dev, probe) ||
 	    wps_build_probe_config_methods(reg, probe) ||
-	    wps_build_rf_bands(&reg->wps->dev, probe) ||
+	    (reg->dualband && wps_build_rf_bands(&reg->wps->dev, probe)) ||
 	    wps_build_wfa_ext(probe, 0, auth_macs, count) ||
 	    wps_build_vendor_ext(&reg->wps->dev, probe)) {
 		wpabuf_free(beacon);