diff --git a/examples/schelling/model.py b/examples/schelling/model.py
index 4bdca529..a2b32ba3 100644
--- a/examples/schelling/model.py
+++ b/examples/schelling/model.py
@@ -19,7 +19,9 @@ def __init__(self, model: mesa.Model, agent_type: int) -> None:
 
     def step(self):
         neighbors = self.cell.get_neighborhood(radius=self.model.radius).agents
-        similar = len([neighbor for neighbor in neighbors if neighbor.type == self.type])
+        similar = len(
+            [neighbor for neighbor in neighbors if neighbor.type == self.type]
+        )
 
         # If unhappy, move:
         if similar < self.model.homophily: