diff --git a/netbox_branching/models/changes.py b/netbox_branching/models/changes.py
index 1890823..72cbc9d 100644
--- a/netbox_branching/models/changes.py
+++ b/netbox_branching/models/changes.py
@@ -159,7 +159,8 @@ def __str__(self):
 
     def save(self, *args, **kwargs):
         self._update_conflicts()
-        self.object_repr = str(self.object)
+        if self.object:
+            self.object_repr = str(self.object)
 
         super().save(*args, **kwargs)