diff --git a/.github/workflows/clean-db.yml b/.github/workflows/clean-db.yml
index 98501c1..7062a7b 100644
--- a/.github/workflows/clean-db.yml
+++ b/.github/workflows/clean-db.yml
@@ -29,4 +29,3 @@ jobs:
 
       - name: Clean
         run: make dev_clean_db
-  
\ No newline at end of file
diff --git a/clean-db.js b/clean-db.js
index 46323a6..7c08f1c 100644
--- a/clean-db.js
+++ b/clean-db.js
@@ -21,13 +21,13 @@ const main = async function() {
             if (typeof updatedAt !== 'number') {
                 process.stdout.write(`room#${childSnapshot.key}\twrong type: ${typeof updatedAt}\n`);
             } else if (updatedAt < now - diff) {
-                process.stdout.write(`room#${childSnapshot.key}\tupdated ${Math.round((now - updatedAt) / 60 / 60 / 24)} hours ago\n`);
+                process.stdout.write(`room#${childSnapshot.key}\tupdated ${Math.round((now - updatedAt) / 60 / 60 / 24)} days ago\n`);
             } else if (updatedAt > now + diff) {
-                process.stdout.write(`room#${childSnapshot.key}\tupdated ${Math.round((updatedAt - now) / 60 / 60 / 24)} hours ahead (in future)\n`);
+                process.stdout.write(`room#${childSnapshot.key}\tupdated ${Math.round((updatedAt - now) / 60 / 60 / 24)} days ahead (in future)\n`);
             } else {
                 return;
             }
-            await childSnapshot.ref.remove();
+            // await childSnapshot.ref.remove();
             ++count;
         })();
         promises.push(task);
diff --git a/stats.js b/stats.js
index 2b616be..f3d9977 100644
--- a/stats.js
+++ b/stats.js
@@ -1,5 +1,5 @@
 import admin from 'firebase-admin';
-import { ref, onValue, get } from 'firebase/database';
+import { get } from 'firebase/database';
 import serviceAccount from './service-account-key.json' assert { type: "json" };
 
 admin.initializeApp({