diff --git a/src/backend/executor/nodeWindowAgg.c b/src/backend/executor/nodeWindowAgg.c
index c3efe129c25b26605d8f4cab38b915e606b5d100..51f98c1c856a635710711fa3be722165d7593663 100644
--- a/src/backend/executor/nodeWindowAgg.c
+++ b/src/backend/executor/nodeWindowAgg.c
@@ -181,7 +181,7 @@ static bool window_gettupleslot(WindowObject winobj, int64 pos,
 
 /*
  * initialize_windowaggregate
- * parallel to initialize_aggregate in nodeAgg.c
+ * parallel to initialize_aggregates in nodeAgg.c
  */
 static void
 initialize_windowaggregate(WindowAggState *winstate,
@@ -207,7 +207,7 @@ initialize_windowaggregate(WindowAggState *winstate,
 
 /*
  * advance_windowaggregate
- * parallel to advance_aggregate in nodeAgg.c
+ * parallel to advance_aggregates in nodeAgg.c
  */
 static void
 advance_windowaggregate(WindowAggState *winstate,