diff --git a/src/Model/Study.py b/src/Model/Study.py
index 250efa8f..d08e7c4d 100644
--- a/src/Model/Study.py
+++ b/src/Model/Study.py
@@ -546,7 +546,8 @@ class Study(SQLModel):
         self.status.scenario = scenario
 
         if reduce(
-                lambda a, s: a or (s.parent is scenario and not s.is_deleted()),
+                lambda a, s: a or (s.parent is scenario
+                                   and not s.is_deleted()),
                 self.scenarios.lst,
                 False
         ):