diff --git a/src/backend/distributed/executor/adaptive_executor.c b/src/backend/distributed/executor/adaptive_executor.c
index 8369878b7..b9b1163e4 100644
--- a/src/backend/distributed/executor/adaptive_executor.c
+++ b/src/backend/distributed/executor/adaptive_executor.c
@@ -4777,6 +4777,7 @@ ReceiveResults(WorkerSession *session, bool storeRows)
 		TupleDesc tupleDescriptor = tupleDest->tupleDescForQuery(tupleDest, queryIndex);
 		if (tupleDescriptor == NULL)
 		{
+			PQclear(result);
 			continue;
 		}