diff --git a/src/blenderbim/blenderbim/bim/module/spatial/__init__.py b/src/blenderbim/blenderbim/bim/module/spatial/__init__.py
index 36a178196c..f1223bb684 100644
--- a/src/blenderbim/blenderbim/bim/module/spatial/__init__.py
+++ b/src/blenderbim/blenderbim/bim/module/spatial/__init__.py
@@ -60,7 +60,8 @@ def register():
 
 
 def unregister():
-    bpy.utils.unregister_tool(workspace.SpatialTool)
+    if not bpy.app.background:
+        bpy.utils.unregister_tool(workspace.SpatialTool)
     del bpy.types.Scene.BIMSpatialProperties
     del bpy.types.Object.BIMObjectSpatialProperties
     del bpy.types.Scene.BIMSpatialManagerProperties
diff --git a/src/blenderbim/blenderbim/bim/module/structural/__init__.py b/src/blenderbim/blenderbim/bim/module/structural/__init__.py
index 8abf140f4c..99f44a971a 100644
--- a/src/blenderbim/blenderbim/bim/module/structural/__init__.py
+++ b/src/blenderbim/blenderbim/bim/module/structural/__init__.py
@@ -100,6 +100,7 @@ def register():
 
 
 def unregister():
-    bpy.utils.unregister_tool(workspace.StructuralTool)
+    if not bpy.app.background:
+        bpy.utils.unregister_tool(workspace.StructuralTool)
     del bpy.types.Scene.BIMStructuralProperties
     del bpy.types.Object.BIMStructuralProperties