diff --git a/pageserver/src/pgdatadir_mapping.rs b/pageserver/src/pgdatadir_mapping.rs
index b611583b60..daadf6abd4 100644
--- a/pageserver/src/pgdatadir_mapping.rs
+++ b/pageserver/src/pgdatadir_mapping.rs
@@ -552,7 +552,8 @@ impl Timeline {
                 Err(e) => Err(PageReconstructError::from(e)),
             },
             Err(e) => {
-                warn!("Failed to get info about AUX files: {}", e);
+                // This is expected: historical databases do not have the key.
+                debug!("Failed to get info about AUX files: {}", e);
                 Ok(HashMap::new())
             }
         }