diff --git a/archipack/__init__.py b/archipack/__init__.py
index 79ac9879faf262b7a524f0fc6771f9787262e198..6b4313ac186b9dc3e4170853511b6e941480b144 100644
--- a/archipack/__init__.py
+++ b/archipack/__init__.py
@@ -279,7 +279,7 @@ class TOOLS_PT_Archipack_PolyLib(Panel):
     bl_region_type = "TOOLS"
     bl_category = "Tools"
     bl_context = "objectmode"
-    
+
     @classmethod
     def poll(self, context):
 
@@ -385,7 +385,7 @@ class TOOLS_PT_Archipack_Tools(Panel):
     bl_region_type = "TOOLS"
     bl_category = "Tools"
     bl_context = "objectmode"
-    
+
     @classmethod
     def poll(self, context):
         return True
@@ -414,7 +414,7 @@ class TOOLS_PT_Archipack_Create(Panel):
     bl_region_type = "TOOLS"
     bl_category = "Create"
     bl_context = "objectmode"
-    
+
     @classmethod
     def poll(self, context):
         return True
@@ -532,7 +532,7 @@ class ARCHIPACK_create_menu(Menu):
     bl_label = 'Archipack'
     bl_idname = 'ARCHIPACK_create_menu'
     bl_context = "objectmode"
-    
+
     def draw(self, context):
         draw_menu(self, context)
 
@@ -614,7 +614,7 @@ def unregister():
     bpy.utils.unregister_class(TOOLS_PT_Archipack_Tools)
     bpy.utils.unregister_class(TOOLS_PT_Archipack_Create)
     bpy.utils.unregister_class(Archipack_Pref)
-    
+
     # unregister subs
     archipack_snap.unregister()
     archipack_manipulator.unregister()
diff --git a/archipack/archipack_stair.py b/archipack/archipack_stair.py
index c7e7f02c14d8a9156a1fb77fd85b760acb222650..02f806348257921e5fc849b9718750415dc37687 100644
--- a/archipack/archipack_stair.py
+++ b/archipack/archipack_stair.py
@@ -946,7 +946,7 @@ class StairGenerator():
     def make_stair(self, height, step_depth, verts, faces, matids, uvs, nose_y=0):
         n_steps = self.n_steps(step_depth)
         self.set_height(height / n_steps)
-        
+
         for s, stair in enumerate(self.stairs):
             if s < len(self.parts):
                 manipulator = self.parts[s].manipulators[0]