diff --git a/aiogram/contrib/fsm_storage/memory.py b/aiogram/contrib/fsm_storage/memory.py
index dffa275e..8950aa8e 100644
--- a/aiogram/contrib/fsm_storage/memory.py
+++ b/aiogram/contrib/fsm_storage/memory.py
@@ -108,4 +108,4 @@ class MemoryStorage(BaseStorage):
         if self.data[chat][user] == {'state': None, 'data': {}, 'bucket': {}}:
             del self.data[chat][user]
         if not self.data[chat]:
-            del self.data[chat]
\ No newline at end of file
+            del self.data[chat]