diff --git a/src/blenderbim/blenderbim/bim/module/model/array.py b/src/blenderbim/blenderbim/bim/module/model/array.py
index 924b6c3f02..0c3e3cb819 100644
--- a/src/blenderbim/blenderbim/bim/module/model/array.py
+++ b/src/blenderbim/blenderbim/bim/module/model/array.py
@@ -120,6 +120,7 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
         props.y = data["y"]
         props.z = data["z"]
         props.is_editing = self.item
+        return {'FINISHED'}
 
 
 class RemoveArray(bpy.types.Operator, tool.Ifc.Operator):
diff --git a/src/blenderbim/blenderbim/bim/module/model/stair.py b/src/blenderbim/blenderbim/bim/module/model/stair.py
index 1314e59efa..c47cdb89d3 100644
--- a/src/blenderbim/blenderbim/bim/module/model/stair.py
+++ b/src/blenderbim/blenderbim/bim/module/model/stair.py
@@ -361,6 +361,7 @@ class EnableEditingStair(bpy.types.Operator, tool.Ifc.Operator):
             setattr(props, prop_name, data[prop_name])
 
         props.is_editing = 1
+        return {'FINISHED'}
 
 
 class RemoveStair(bpy.types.Operator, tool.Ifc.Operator):