diff --git a/loki-server-store/src/memory/content.rs b/loki-server-store/src/memory/content.rs
index 1d16237e..c45decba 100644
--- a/loki-server-store/src/memory/content.rs
+++ b/loki-server-store/src/memory/content.rs
@@ -178,7 +178,7 @@ impl OplogStore for MemoryStores {
             .into_iter()
             .filter(|(_, count)| *count >= min_entries)
             .collect();
-        backlog.sort_by(|a, b| b.1.cmp(&a.1));
+        backlog.sort_by_key(|&(_, count)| std::cmp::Reverse(count));
         Ok(backlog)
     }
 }
diff --git a/loki-server-store/src/memory/mod.rs b/loki-server-store/src/memory/mod.rs
index ba0fb3b1..b6d2d9aa 100644
--- a/loki-server-store/src/memory/mod.rs
+++ b/loki-server-store/src/memory/mod.rs
@@ -88,7 +88,7 @@ impl WorkspaceStore for MemoryStores {
             .filter(|d| d.workspace_id == id)
             .cloned()
             .collect();
-        docs.sort_by(|a, b| b.created_at.cmp(&a.created_at));
+        docs.sort_by_key(|d| std::cmp::Reverse(d.created_at));
         Ok(docs)
     }
 }