diff --git a/korman/operators/op_lightmap.py b/korman/operators/op_lightmap.py
index 7f6b09f..1354114 100644
--- a/korman/operators/op_lightmap.py
+++ b/korman/operators/op_lightmap.py
@@ -69,8 +69,6 @@ class _LightingOperator:
         for material, lg in self._old_lightgroups.items():
             _fake = material.light_group
             if _fake is not None:
-                for i in _fake.objects:
-                    _fake.objects.unlink(i)
                 _fake.user_clear()
                 bpy.data.groups.remove(_fake)
             material.light_group = lg