diff --git a/libs/pq_proto/src/lib.rs b/libs/pq_proto/src/lib.rs
index 2143ad2530..8e361b757c 100644
--- a/libs/pq_proto/src/lib.rs
+++ b/libs/pq_proto/src/lib.rs
@@ -613,7 +613,7 @@ pub struct XLogDataBody<'a> {
 
 #[derive(Debug)]
 pub struct WalSndKeepAlive {
-    pub sent_ptr: u64,
+    pub wal_end: u64, // current end of WAL on the server
     pub timestamp: i64,
     pub request_reply: bool,
 }
@@ -924,7 +924,7 @@ impl<'a> BeMessage<'a> {
                 buf.put_u8(b'd');
                 write_body(buf, |buf| {
                     buf.put_u8(b'k');
-                    buf.put_u64(req.sent_ptr);
+                    buf.put_u64(req.wal_end);
                     buf.put_i64(req.timestamp);
                     buf.put_u8(u8::from(req.request_reply));
                 });
diff --git a/safekeeper/src/send_wal.rs b/safekeeper/src/send_wal.rs
index f502500e7d..fb420cba64 100644
--- a/safekeeper/src/send_wal.rs
+++ b/safekeeper/src/send_wal.rs
@@ -573,7 +573,7 @@ impl<IO: AsyncRead + AsyncWrite + Unpin> WalSender<'_, IO> {
 
             self.pgb
                 .write_message(&BeMessage::KeepAlive(WalSndKeepAlive {
-                    sent_ptr: self.end_pos.0,
+                    wal_end: self.end_pos.0,
                     timestamp: get_current_timestamp(),
                     request_reply: true,
                 }))