diff --git a/cq_editor/widgets/object_tree.py b/cq_editor/widgets/object_tree.py
index f8d4bdb9..d6651615 100644
--- a/cq_editor/widgets/object_tree.py
+++ b/cq_editor/widgets/object_tree.py
@@ -13,7 +13,6 @@
 from OCP.AIS import AIS_Line
 from OCP.Geom import Geom_CartesianPoint
 from OCP.gp import gp_Pnt
-from OCP.Graphic3d import Graphic3d_ZLayerId_Topmost
 from OCP.Bnd import Bnd_Box
 
 from ..mixins import ComponentMixin
@@ -279,7 +278,6 @@ def addLines(self):
             p1, p2 = self._axis_points(direction, DEFAULT_AXIS_HALF_LEN)
             line = AIS_Line(p1, p2)
             line.SetColor(to_occ_color(color))
-            line.SetZLayer(Graphic3d_ZLayerId_Topmost)
 
             item = ObjectTreeItem(name, ais=line)
             self.Helpers.addChild(item)
diff --git a/cq_editor/widgets/viewer.py b/cq_editor/widgets/viewer.py
index 1aeca99d..6fc6110e 100644
--- a/cq_editor/widgets/viewer.py
+++ b/cq_editor/widgets/viewer.py
@@ -8,7 +8,6 @@
     Graphic3d_StereoMode,
     Graphic3d_NOM_JADE,
     Graphic3d_MaterialAspect,
-    Graphic3d_ZLayerId_Topmost,
 )
 from OCP.AIS import (
     AIS_Shaded,
@@ -128,7 +127,6 @@ def __init__(self, parent=None):
         )
 
         self.setup_default_drawer()
-        self.setup_helper_layer()
         self.updatePreferences()
 
     def setup_default_drawer(self):
@@ -145,16 +143,6 @@ def setup_default_drawer(self):
         line_aspect.SetWidth(DEFAULT_EDGE_WIDTH)
         line_aspect.SetColor(DEFAULT_EDGE_COLOR)
 
-    def setup_helper_layer(self):
-        """
-        Set up a render layer specifically for the axis helper lines.
-        """
-        viewer = self.canvas.context.CurrentViewer()
-        settings = viewer.ZLayerSettings(Graphic3d_ZLayerId_Topmost)
-        settings.SetEnableDepthTest(False)  # lines never depth-compare with the model
-        settings.SetEnableDepthWrite(False)  # lines never write into the depth buffer
-        viewer.SetZLayerSettings(Graphic3d_ZLayerId_Topmost, settings)
-
     def updatePreferences(self, *args):
 
         color1 = to_occ_color(self.preferences["Background color"])