diff --git a/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp b/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp
index f5df156592..71142d532f 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp
@@ -759,6 +759,7 @@ void GLGizmoFdmSupports::on_set_state()
     if (m_state == Off && m_old_state != Off) { // the gizmo was just turned Off
         // we are actually shutting down
         m_setting_angle = false;
+        m_parent.use_slope(false);
         wxGetApp().plater()->leave_gizmos_stack();
         {
             Plater::TakeSnapshot snapshot(wxGetApp().plater(), _(L("FDM gizmo turned off")));