diff --git a/src/backend/replication/walsender.c b/src/backend/replication/walsender.c
index 4a4643e..08da433 100644
--- a/src/backend/replication/walsender.c
+++ b/src/backend/replication/walsender.c
@@ -1962,6 +1962,9 @@ InitWalSenderSlot(void)
 			 */
 			walsnd->pid = MyProcPid;
 			walsnd->sentPtr = InvalidXLogRecPtr;
+			walsnd->write = InvalidXLogRecPtr;
+			walsnd->flush = InvalidXLogRecPtr;
+			walsnd->apply = InvalidXLogRecPtr;
 			walsnd->state = WALSNDSTATE_STARTUP;
 			walsnd->latch = &MyProc->procLatch;
 			SpinLockRelease(&walsnd->mutex);