diff --git a/api/db/services/dialog_service.py b/api/db/services/dialog_service.py
index cfa387930..68e470eb8 100644
--- a/api/db/services/dialog_service.py
+++ b/api/db/services/dialog_service.py
@@ -13,7 +13,6 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
-import asyncio
 import binascii
 import logging
 import re