diff --git a/services/listen_dnsport.c b/services/listen_dnsport.c
index 5db2b940b..b1d9ec7b7 100644
--- a/services/listen_dnsport.c
+++ b/services/listen_dnsport.c
@@ -5409,9 +5409,9 @@ doq_conn_write_streams(struct comm_point* c, struct doq_conn* conn,
 				verbose(VERB_ALGO, "doq: ngtcp2_conn_writev_stream returned NGTCP2_ERR_STREAM_DATA_BLOCKED");
 #ifdef HAVE_NGTCP2_CCERR_DEFAULT
 				ngtcp2_ccerr_set_application_error(
-					&conn->ccerr, -1, NULL, 0);
+					&conn->ccerr, DOQ_APP_ERROR_CODE, NULL, 0);
 #else
-				ngtcp2_connection_close_error_set_application_error(&conn->last_error, -1, NULL, 0);
+				ngtcp2_connection_close_error_set_application_error(&conn->last_error, DOQ_APP_ERROR_CODE, NULL, 0);
 #endif
 				if(err_drop)
 					*err_drop = 0;
@@ -5424,9 +5424,9 @@ doq_conn_write_streams(struct comm_point* c, struct doq_conn* conn,
 				verbose(VERB_ALGO, "doq: ngtcp2_conn_writev_stream returned NGTCP2_ERR_STREAM_SHUT_WR");
 #ifdef HAVE_NGTCP2_CCERR_DEFAULT
 				ngtcp2_ccerr_set_application_error(
-					&conn->ccerr, -1, NULL, 0);
+					&conn->ccerr, DOQ_APP_ERROR_CODE, NULL, 0);
 #else
-				ngtcp2_connection_close_error_set_application_error(&conn->last_error, -1, NULL, 0);
+				ngtcp2_connection_close_error_set_application_error(&conn->last_error, DOQ_APP_ERROR_CODE, NULL, 0);
 #endif
 				if(err_drop)
 					*err_drop = 0;