diff --git a/tests/isc/udp_test.c b/tests/isc/udp_test.c
index 64066ec28f..81340a2174 100644
--- a/tests/isc/udp_test.c
+++ b/tests/isc/udp_test.c
@@ -774,6 +774,7 @@ udp__send_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
 			}
 		}
 		break;
+	case ISC_R_SHUTTINGDOWN:
 	case ISC_R_CANCELED:
 		break;
 	default: