diff --git a/recette/models.py b/recette/models.py
index aac7568..feb3468 100644
--- a/recette/models.py
+++ b/recette/models.py
@@ -96,7 +96,5 @@ def auto_delete_photo_on_change(sender, instance, **kwargs):
     except Recette.DoesNotExist:
         return False
 
-    new_file = instance.photo
-    if not old_file == new_file:
-        if os.path.isfile(old_file.path):
-            os.remove(old_file.path)
+    if old_file and old_file != instance.photo and os.path.isfile(old_file.path):
+        os.remove(old_file.path)