FIx failing mypy test

CURA-8083

1 files changed, 2 insertions, 0 deletions

diff --git a/cura/BuildVolume.py b/cura/BuildVolume.py
index 911a542834..fc5691f034 100755
--- a/cura/BuildVolume.py
+++ b/cura/BuildVolume.py
@@ -770,6 +770,8 @@ class BuildVolume(SceneNode):
         self.rebuild()
 
     def _scaleAreas(self, result_areas: List[Polygon]) -> None:
+        if self._global_container_stack is None:
+            return
         for i, polygon in enumerate(result_areas):
             result_areas[i] = polygon.scale(
                 100.0 / max(100.0, self._global_container_stack.getProperty("material_shrinkage_percentage_xy", "value"))