diff --git a/safekeeper/src/send_wal.rs b/safekeeper/src/send_wal.rs
index 6b303eb0fe..10fe0202cd 100644
--- a/safekeeper/src/send_wal.rs
+++ b/safekeeper/src/send_wal.rs
@@ -551,7 +551,7 @@ impl<IO: AsyncRead + AsyncWrite + Unpin> WalSender<'_, IO> {
 
             self.pgb
                 .write_message(&BeMessage::KeepAlive(WalSndKeepAlive {
-                    sent_ptr: self.end_pos.0,
+                    sent_ptr: self.start_pos.0,
                     timestamp: get_current_timestamp(),
                     request_reply: true,
                 }))