diff --git a/src/backend/replication/walsender.c b/src/backend/replication/walsender.c
index 1ea2a5cfdf1225d1ab781a227a713c8f96ad6f62..c7743da034ac332c69d5ade737c3d07516370056 100644
--- a/src/backend/replication/walsender.c
+++ b/src/backend/replication/walsender.c
@@ -1806,6 +1806,9 @@ WalSndLoop(WalSndSendDataCallback send_data)
 	last_reply_timestamp = GetCurrentTimestamp();
 	waiting_for_ping_response = false;
 
+	/* Report to pgstat that this process is a WAL sender */
+	pgstat_report_activity(STATE_RUNNING, "walsender");
+
 	/*
 	 * Loop until we reach the end of this timeline or the client requests to
 	 * stop streaming.