diff --git a/pageserver/src/walredo/apply_neon.rs b/pageserver/src/walredo/apply_neon.rs
index 7aaa357318..d712d8bf5e 100644
--- a/pageserver/src/walredo/apply_neon.rs
+++ b/pageserver/src/walredo/apply_neon.rs
@@ -67,7 +67,10 @@ pub(crate) fn apply_in_neon(
                 let map = &mut page[pg_constants::MAXALIGN_SIZE_OF_PAGE_HEADER_DATA..];
 
                 map[map_byte as usize] &= !(flags << map_offset);
-                postgres_ffi::page_set_lsn(page, lsn);
+                // The page should never be empty, but we're checking it anyway as a precaution, so that if it is empty for some reason anyway, we don't make matters worse by setting the LSN on it.
+                if !postgres_ffi::page_is_new(page) {
+                    postgres_ffi::page_set_lsn(page, lsn);
+                }
             }
 
             // Repeat for 'old_heap_blkno', if any
@@ -81,7 +84,10 @@ pub(crate) fn apply_in_neon(
                 let map = &mut page[pg_constants::MAXALIGN_SIZE_OF_PAGE_HEADER_DATA..];
 
                 map[map_byte as usize] &= !(flags << map_offset);
-                postgres_ffi::page_set_lsn(page, lsn);
+                // The page should never be empty, but we're checking it anyway as a precaution, so that if it is empty for some reason anyway, we don't make matters worse by setting the LSN on it.
+                if !postgres_ffi::page_is_new(page) {
+                    postgres_ffi::page_set_lsn(page, lsn);
+                }
             }
         }
         // Non-relational WAL records are handled here, with custom code that has the