diff --git a/src/backend/utils/sort/tuplesort.c b/src/backend/utils/sort/tuplesort.c
index b17347b214..09cb73657e 100644
--- a/src/backend/utils/sort/tuplesort.c
+++ b/src/backend/utils/sort/tuplesort.c
@@ -845,9 +845,9 @@ tuplesort_begin_batch(Tuplesortstate *state)
 	 * in the parent context, not this context, because there is no need to
 	 * free memtuples early.
 	 */
-	state->tuplecontext = AllocSetContextCreate(state->sortcontext,
-												"Caller tuples",
-												ALLOCSET_DEFAULT_SIZES);
+	state->tuplecontext = GenerationContextCreate(state->sortcontext,
+												  "Caller tuples",
+												  ALLOCSET_DEFAULT_MAXSIZE);
 
 	state->status = TSS_INITIAL;
 	state->bounded = false;