diff --git a/src/slic3r/GUI/GLGizmo.cpp b/src/slic3r/GUI/GLGizmo.cpp
index 69dbdddcf..0a61e7900 100644
--- a/src/slic3r/GUI/GLGizmo.cpp
+++ b/src/slic3r/GUI/GLGizmo.cpp
@@ -1466,6 +1466,7 @@ void GLGizmoFlatten::on_render(const GLCanvas3D::Selection& selection) const
         const Transform3d& m = selection.get_volume(*selection.get_volume_idxs().begin())->get_instance_transformation().get_matrix();
         ::glPushMatrix();
         ::glMultMatrixd(m.data());
+        ::glTranslatef(0.f, 0.f, selection.get_volume(*selection.get_volume_idxs().begin())->get_sla_shift_z());
         for (int i = 0; i < (int)m_planes.size(); ++i)
         {
             if (i == m_hover_id)
@@ -1497,6 +1498,7 @@ void GLGizmoFlatten::on_render_for_picking(const GLCanvas3D::Selection& selectio
         const Transform3d& m = selection.get_volume(*selection.get_volume_idxs().begin())->get_instance_transformation().get_matrix();
         ::glPushMatrix();
         ::glMultMatrixd(m.data());
+        ::glTranslatef(0.f, 0.f, selection.get_volume(*selection.get_volume_idxs().begin())->get_sla_shift_z());
         for (int i = 0; i < (int)m_planes.size(); ++i)
         {
             ::glColor3f(1.0f, 1.0f, picking_color_component(i));