diff --git a/src/blenderbim/blenderbim/bim/module/boundary/operator.py b/src/blenderbim/blenderbim/bim/module/boundary/operator.py
index cf747e6d67..5eb502edea 100644
--- a/src/blenderbim/blenderbim/bim/module/boundary/operator.py
+++ b/src/blenderbim/blenderbim/bim/module/boundary/operator.py
@@ -35,6 +35,7 @@ from mathutils import Vector, Matrix
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.model.decorator import ProfileDecorator
 from blenderbim.bim.module.boundary.decorator import BoundaryDecorator
+import blenderbim.core
 
 
 def get_boundaries_collection(blender_space):