diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
index 8745274f4b..b5ead52fd6 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
@@ -127,13 +127,12 @@ void GLGizmoSlaSupports::render_points(const Selection& selection, bool picking)
     if (! has_points && ! has_holes)
         return;
 
-    GLShaderProgram* shader = picking ? nullptr : wxGetApp().get_shader("gouraud_light");
-    if (shader != nullptr)
-        shader->start_using();
-    ScopeGuard guard([shader]() {
-        if (shader != nullptr)
-            shader->stop_using();
-    });
+    GLShaderProgram* shader = wxGetApp().get_shader(picking ? "flat" : "gouraud_light");
+    if (shader == nullptr)
+        return;
+
+    shader->start_using();
+    ScopeGuard guard([shader]() { shader->stop_using(); });
 
     const GLVolume* vol = selection.get_volume(*selection.get_volume_idxs().begin());
     const Transform3d& instance_scaling_matrix_inverse = vol->get_instance_transformation().get_matrix(true, true, false, true).inverse();
@@ -176,7 +175,7 @@ void GLGizmoSlaSupports::render_points(const Selection& selection, bool picking)
 
         m_cone.set_color(render_color);
         m_sphere.set_color(render_color);
-        if (shader && !picking)
+        if (!picking)
             shader->set_uniform("emission_factor", 0.5f);
 
         // Inverse matrix of the instance scaling is applied so that the mark does not scale with the object.
@@ -228,8 +227,7 @@ void GLGizmoSlaSupports::render_points(const Selection& selection, bool picking)
     if (has_holes && ! picking) {
         render_color = { 0.7f, 0.7f, 0.7f, 0.7f };
         m_cylinder.set_color(render_color);
-        if (shader)
-            shader->set_uniform("emission_factor", 0.5f);
+        shader->set_uniform("emission_factor", 0.5f);
         for (const sla::DrainHole& drain_hole : m_c->selection_info()->model_object()->sla_drain_holes) {
             if (is_mesh_point_clipped(drain_hole.pos.cast<double>()))
                 continue;