diff --git a/src/backend/utils/time/tqual.c b/src/backend/utils/time/tqual.c
index 96e480bc07..52d42e5614 100644
--- a/src/backend/utils/time/tqual.c
+++ b/src/backend/utils/time/tqual.c
@@ -861,7 +861,8 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
 
 	if (TransactionIdIsInProgress(HeapTupleHeaderGetXmax(tuple)))
 	{
-		snapshot->xmax = HeapTupleHeaderGetXmax(tuple);
+		if (!(tuple->t_infomask & HEAP_IS_LOCKED))
+			snapshot->xmax = HeapTupleHeaderGetXmax(tuple);
 		return true;
 	}