diff --git a/pflaenzli/models.py b/pflaenzli/models.py
index 7bcb3cd..e0c7413 100644
--- a/pflaenzli/models.py
+++ b/pflaenzli/models.py
@@ -33,7 +33,7 @@ def auto_delete_image_on_delete(sender, instance, **kwargs):
 def delete_old_image(sender, instance, **kwargs):
     try:
         old_image = sender.objects.get(pk=instance.pk).image
-    except sender.doesNotExist:
+    except sender.DoesNotExist:
         return False
 
     default_storage.delete(old_image.path)