diff --git a/src/bonsai/bonsai/tool/raycast.py b/src/bonsai/bonsai/tool/raycast.py
index f04b2288c5..0a9d6e7dda 100644
--- a/src/bonsai/bonsai/tool/raycast.py
+++ b/src/bonsai/bonsai/tool/raycast.py
@@ -970,7 +970,12 @@ class Raycast(bonsai.core.tool.Raycast):
         if obj.data is None or not isinstance(obj.data, bpy.types.Mesh):
             return None
         for i, snap_obj in enumerate(cls.snap_objs):
-            if obj.name == snap_obj.obj.name:
+            try:
+                cached_name = snap_obj.obj.name
+            except ReferenceError:
+                cls.snap_objs.pop(i)
+                break
+            if obj.name == cached_name:
                 # Fast O(1) invalidation: vertex count change (mesh edit) or
                 # world matrix change (object moved/rotated).
                 if len(obj.data.vertices) != len(snap_obj.verts_3d):