diff --git a/src/backend/utils/sort/sortsupport.c b/src/backend/utils/sort/sortsupport.c
index 16342f388d..4813f57f9d 100644
--- a/src/backend/utils/sort/sortsupport.c
+++ b/src/backend/utils/sort/sortsupport.c
@@ -167,7 +167,6 @@ PrepareSortSupportFromIndexRel(Relation indexRel, int16 strategy,
 
 	Assert(ssup->comparator == NULL);
 
-	/* Find the operator in pg_amop */
 	if (indexRel->rd_rel->relam != BTREE_AM_OID)
 		elog(ERROR, "unexpected non-btree AM: %u", indexRel->rd_rel->relam);
 	if (strategy != BTGreaterStrategyNumber &&