diff --git a/src/backend/optimizer/plan/planner.c b/src/backend/optimizer/plan/planner.c
index df35d1ff9c..dffdad3200 100644
--- a/src/backend/optimizer/plan/planner.c
+++ b/src/backend/optimizer/plan/planner.c
@@ -352,6 +352,7 @@ standard_planner(Query *parse, const char *query_string, int cursorOptions,
 		parse->commandType == CMD_SELECT &&
 		!parse->hasModifyingCTE &&
 		max_parallel_workers_per_gather > 0 &&
+		InterruptHoldoffCount == 0 && CritSectionCount == 0 &&
 		!IsParallelWorker())
 	{
 		/* all the cheap tests pass, so scan the query tree */