diff --git a/helpers/alice.py b/helpers/alice.py
index b6da4ec..62d4210 100644
--- a/helpers/alice.py
+++ b/helpers/alice.py
@@ -12,7 +12,7 @@ class Processor:
         self.message = data['request']['original_utterance'].lower()
 
     def get_lesson_for_user(self, hse_id: int):
-        for lesson in mongo.lessons_collection.find({"hse_user_id": hse_id}).sort({"begin": 1}):
+        for lesson in mongo.lessons_collection.find({"hse_user_id": hse_id}).sort([("begin", 1)]):
             return lesson
         return None