diff --git a/resolvers/follower.py b/resolvers/follower.py
index 7e96422e..21d30857 100644
--- a/resolvers/follower.py
+++ b/resolvers/follower.py
@@ -27,7 +27,8 @@ def get_entity_field_name(entity_type: str) -> str:
     """Возвращает имя поля для связи с сущностью в модели подписчика"""
     entity_field_mapping = {"author": "following", "topic": "topic", "community": "community", "shout": "shout"}
     if entity_type not in entity_field_mapping:
-        raise ValueError(f"Unknown entity_type: {entity_type}")
+        msg = f"Unknown entity_type: {entity_type}"
+        raise ValueError(msg)
     return entity_field_mapping[entity_type]