diff --git a/libs/pageserver_api/src/models.rs b/libs/pageserver_api/src/models.rs
index e1b7c7d08c..70024bdfca 100644
--- a/libs/pageserver_api/src/models.rs
+++ b/libs/pageserver_api/src/models.rs
@@ -735,7 +735,7 @@ pub struct PagestreamDbSizeRequest {
 
 #[derive(Debug, PartialEq, Eq)]
 pub struct PagestreamGetSlruSegmentRequest {
-    pub latest: bool,
+    pub horizon: Lsn,
     pub lsn: Lsn,
     pub kind: u8,
     pub segno: u32,
@@ -818,17 +818,6 @@ impl PagestreamFeMessage {
                 bytes.put_u32(req.blkno);
             }
 
-            Self::GetPage(req) => {
-                bytes.put_u8(4);
-                bytes.put_u64(req.horizon.0);
-                bytes.put_u64(req.lsn.0);
-                bytes.put_u32(req.rel.spcnode);
-                bytes.put_u32(req.rel.dbnode);
-                bytes.put_u32(req.rel.relnode);
-                bytes.put_u8(req.rel.forknum);
-                bytes.put_u32(req.blkno);
-            }
-
             Self::DbSize(req) => {
                 bytes.put_u8(3);
                 bytes.put_u64(req.horizon.0);
@@ -838,11 +827,22 @@ impl PagestreamFeMessage {
 
             Self::GetSlruSegment(req) => {
                 bytes.put_u8(4);
-                bytes.put_u8(u8::from(req.latest));
+                bytes.put_u64(req.horizon.0);
                 bytes.put_u64(req.lsn.0);
                 bytes.put_u8(req.kind);
                 bytes.put_u32(req.segno);
             }
+
+            Self::GetPage(req) => {
+                bytes.put_u8(5);
+                bytes.put_u64(req.horizon.0);
+                bytes.put_u64(req.lsn.0);
+                bytes.put_u32(req.rel.spcnode);
+                bytes.put_u32(req.rel.dbnode);
+                bytes.put_u32(req.rel.relnode);
+                bytes.put_u8(req.rel.forknum);
+                bytes.put_u32(req.blkno);
+            }
         }
 
         bytes.into()
@@ -895,7 +895,15 @@ impl PagestreamFeMessage {
                 lsn: Lsn::from(body.read_u64::<BigEndian>()?),
                 dbnode: body.read_u32::<BigEndian>()?,
             })),
-            4 => Ok(PagestreamFeMessage::GetPage(PagestreamGetPageRequest {
+            4 => Ok(PagestreamFeMessage::GetSlruSegment(
+                PagestreamGetSlruSegmentRequest {
+                    horizon: Lsn::from(body.read_u64::<BigEndian>()?),
+                    lsn: Lsn::from(body.read_u64::<BigEndian>()?),
+                    kind: body.read_u8()?,
+                    segno: body.read_u32::<BigEndian>()?,
+                },
+            )),
+            5 => Ok(PagestreamFeMessage::GetPage(PagestreamGetPageRequest {
                 horizon: Lsn::from(body.read_u64::<BigEndian>()?),
                 lsn: Lsn::from(body.read_u64::<BigEndian>()?),
                 rel: RelTag {
@@ -906,14 +914,6 @@ impl PagestreamFeMessage {
                 },
                 blkno: body.read_u32::<BigEndian>()?,
             })),
-            5 => Ok(PagestreamFeMessage::GetSlruSegment(
-                PagestreamGetSlruSegmentRequest {
-                    latest: body.read_u8()? != 0,
-                    lsn: Lsn::from(body.read_u64::<BigEndian>()?),
-                    kind: body.read_u8()?,
-                    segno: body.read_u32::<BigEndian>()?,
-                },
-            )),
             _ => bail!("unknown smgr message tag: {:?}", msg_tag),
         }
     }
diff --git a/pageserver/src/page_service.rs b/pageserver/src/page_service.rs
index 74aff21578..c1b00e995b 100644
--- a/pageserver/src/page_service.rs
+++ b/pageserver/src/page_service.rs
@@ -1175,7 +1175,7 @@ impl PageServerHandler {
 
         let latest_gc_cutoff_lsn = timeline.get_latest_gc_cutoff_lsn();
         let lsn =
-            Self::wait_or_get_last_lsn(timeline, req.lsn, req.latest, &latest_gc_cutoff_lsn, ctx)
+            Self::wait_or_get_last_lsn(timeline, req.lsn, req.horizon, &latest_gc_cutoff_lsn, ctx)
                 .await?;
 
         let kind = SlruKind::from_repr(req.kind)
diff --git a/pgxn/neon/pagestore_smgr.c b/pgxn/neon/pagestore_smgr.c
index d6298ca1a3..dd69bc7503 100644
--- a/pgxn/neon/pagestore_smgr.c
+++ b/pgxn/neon/pagestore_smgr.c
@@ -1063,7 +1063,7 @@ nm_pack_request(NeonRequest *msg)
 			{
 				NeonGetSlruSegmentRequest *msg_req = (NeonGetSlruSegmentRequest *) msg;
 
-				pq_sendbyte(&s, msg_req->req.latest);
+				pq_sendint64(&s, msg_req->req.horizon);
 				pq_sendint64(&s, msg_req->req.lsn);
 				pq_sendbyte(&s, msg_req->kind);
 				pq_sendint32(&s, msg_req->segno);
@@ -1265,7 +1265,7 @@ nm_to_string(NeonMessage *msg)
 				appendStringInfo(&s, ", \"kind\": %u", msg_req->kind);
 				appendStringInfo(&s, ", \"segno\": %u", msg_req->segno);
 				appendStringInfo(&s, ", \"lsn\": \"%X/%X\"", LSN_FORMAT_ARGS(msg_req->req.lsn));
-				appendStringInfo(&s, ", \"latest\": %d", msg_req->req.latest);
+				appendStringInfo(&s, ", \"horizon\": \"%X/%X\"", LSN_FORMAT_ARGS(msg_req->req.horizon));
 				appendStringInfoChar(&s, '}');
 				break;
 			}
@@ -2832,7 +2832,7 @@ neon_read_slru_segment(SMgrRelation reln, const char* path, int segno, void* buf
 	NeonResponse *resp;
 	NeonGetSlruSegmentRequest request = {
 		.req.tag = T_NeonGetSlruSegmentRequest,
-		.req.latest = false,
+		.req.horizon =  InvalidXLogRecPtr,
 		.req.lsn = request_lsn,
 
 		.kind = kind,