diff --git a/moban/mobanfile/__init__.py b/moban/mobanfile/__init__.py
index 8ded5347..1a1797de 100644
--- a/moban/mobanfile/__init__.py
+++ b/moban/mobanfile/__init__.py
@@ -137,7 +137,9 @@ def handle_targets(merged_options, targets):
                 target.set_template_type(forced_template_type)
 
             template_type = target.template_type
-            primary_template_type = plugins.ENGINES.get_primary_key(template_type)
+            primary_template_type = plugins.ENGINES.get_primary_key(
+                template_type
+            )
             if primary_template_type is None:
                 primary_template_type = merged_options[
                     constants.LABEL_TEMPLATE_TYPE