diff --git a/src/backend/utils/activity/pgstat_wal.c b/src/backend/utils/activity/pgstat_wal.c
index 4dc41a4a590..7beee2095a8 100644
--- a/src/backend/utils/activity/pgstat_wal.c
+++ b/src/backend/utils/activity/pgstat_wal.c
@@ -51,7 +51,7 @@ pgstat_report_wal(bool force)
 	nowait = !force;
 
 	/* flush wal stats */
-	pgstat_flush_wal(nowait);
+	(void) pgstat_wal_flush_cb(nowait);
 
 	/* flush IO stats */
 	pgstat_flush_io(nowait);
@@ -69,15 +69,6 @@ pgstat_fetch_stat_wal(void)
 	return &pgStatLocal.snapshot.wal;
 }
 
-/*
- * Simple wrapper of pgstat_wal_flush_cb()
- */
-void
-pgstat_flush_wal(bool nowait)
-{
-	(void) pgstat_wal_flush_cb(nowait);
-}
-
 /*
  * Calculate how much WAL usage counters have increased by subtracting the
  * previous counters from the current ones.
diff --git a/src/include/utils/pgstat_internal.h b/src/include/utils/pgstat_internal.h
index 06dcea3f0dc..36d228e3558 100644
--- a/src/include/utils/pgstat_internal.h
+++ b/src/include/utils/pgstat_internal.h
@@ -748,8 +748,6 @@ extern void pgstat_slru_snapshot_cb(void);
  * Functions in pgstat_wal.c
  */
 
-extern void pgstat_flush_wal(bool nowait);
-
 extern void pgstat_wal_init_backend_cb(void);
 extern bool pgstat_wal_have_pending_cb(void);
 extern bool pgstat_wal_flush_cb(bool nowait);