diff --git a/example/web/tdweb/src/index.js b/example/web/tdweb/src/index.js
index fc50a6caf..9d044a368 100644
--- a/example/web/tdweb/src/index.js
+++ b/example/web/tdweb/src/index.js
@@ -442,7 +442,7 @@ class FileManager {
 
   init() {
     this.idb = new Promise((resolve, reject) => {
-      const request = window.indexedDB.open(this.instanceName);
+      const request = window.indexedDB.open(this.instanceName, 1);
       request.onsuccess = () => resolve(request.result);
       request.onerror = () => reject(request.error);
     });
@@ -490,10 +490,10 @@ class FileManager {
     }
     if (file.arr) {
       const now = Date.now();
-      while (this.totalSize > 10000000) {
+      while (this.totalSize > 100000000) {
         const node = this.lru.getLru();
-        // immunity for 5 seconds
-        if (node.usedAt + 5 * 1000 > now) {
+        // immunity for 60 seconds
+        if (node.usedAt + 60 * 1000 > now) {
           break;
         }
         const lru_info = this.cache.get(node.value);
@@ -545,7 +545,7 @@ class FileManager {
           query.reject();
         }
       };
-      request.onerror = query.reject;
+      request.onerror = () => query.reject(request.error);
     }
   }
 
diff --git a/example/web/tdweb/src/worker.js b/example/web/tdweb/src/worker.js
index da95ead62..03700e4f6 100644
--- a/example/web/tdweb/src/worker.js
+++ b/example/web/tdweb/src/worker.js
@@ -217,11 +217,15 @@ class InboundFileSystem {
         const request = indexedDB.open(dbName);
         request.onsuccess = () => resolve(request.result);
         request.onerror = () => reject(request.error);
+        request.onupgradeneeded = () => {
+          request.result.createObjectStore('keyvaluepairs');
+        };
       });
 
       ifs.load_pids();
 
       const FS = await FS_promise;
+      await ifs.idb;
       ifs.FS = FS;
       ifs.FS.mkdir(root);
       const create_time = (performance.now() - start) / 1000;
@@ -371,6 +375,15 @@ class InboundFileSystem {
     try {
       this.forget(pid);
       //await this.store.removeItem(pid);
+      let idb = await this.idb;
+      await new Promise((resolve, reject) => {
+        let write = idb
+          .transaction(['keyvaluepairs'], 'readwrite')
+          .objectStore('keyvaluepairs');
+        const request = write.delete(pid);
+        request.onsuccess = () => resolve(request.result);
+        request.onerror = () => reject(request.error);
+      });
     } catch (e) {
       log.error('Failed unlink ' + pid + ' ', e);
     }