diff --git a/watson/models.py b/watson/models.py
index c3cf44f..49c84b2 100644
--- a/watson/models.py
+++ b/watson/models.py
@@ -40,7 +40,7 @@ class SearchEntry(models.Model):
 
     content_type = models.ForeignKey(
         ContentType,
-        on_delete = models.CASCADE,
+        on_delete=models.CASCADE,
     )
 
     object_id = models.TextField()