diff --git a/aiogram_i18n/utils/stub_tree.py b/aiogram_i18n/utils/stub_tree.py
index af90ef2..d4ea8d3 100644
--- a/aiogram_i18n/utils/stub_tree.py
+++ b/aiogram_i18n/utils/stub_tree.py
@@ -89,9 +89,7 @@ def __str__(self) -> str:
         if params and self.kw_only:
             params.insert(0, "*")
         params.insert(0, "self")
-        return (
-            f"def {self.name.replace('-', '_')}({', '.join(params)}) -> str: ..."
-        )
+        return f"def {self.name.replace('-', '_')}({', '.join(params)}) -> str: ..."
 
     __repr__ = __str__