diff --git a/CHANGELOG.md b/CHANGELOG.md
index 572682e67d33..739b782a6c9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   (<https://github.com/opencv/cvat/pull/6129>).
 - HRNet CPU serverless function
   (<https://github.com/opencv/cvat/pull/6150>)
+- Sending empty list of events
+  (<https://github.com/opencv/cvat/pull/6154>)
 
 ### Security
 - TDB
diff --git a/cvat-core/package.json b/cvat-core/package.json
index 2f7d3addb888..932c8284b9c7 100644
--- a/cvat-core/package.json
+++ b/cvat-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-core",
-  "version": "9.1.0",
+  "version": "9.1.1",
   "description": "Part of Computer Vision Tool which presents an interface for client-side integration",
   "main": "src/api.ts",
   "scripts": {
diff --git a/cvat-core/src/logger-storage.ts b/cvat-core/src/logger-storage.ts
index a542a999e598..507aaeff1b5f 100644
--- a/cvat-core/src/logger-storage.ts
+++ b/cvat-core/src/logger-storage.ts
@@ -160,7 +160,7 @@ Object.defineProperties(LoggerStorage.prototype.save, {
         writable: false,
         enumerable: false,
         value: async function implementation() {
-            if (!this.collection) {
+            if (!this.collection.length) {
                 return;
             }