diff --git a/scene/2d/collision_shape_2d.cpp b/scene/2d/collision_shape_2d.cpp
index 4d1d2745425..93949f741bc 100644
--- a/scene/2d/collision_shape_2d.cpp
+++ b/scene/2d/collision_shape_2d.cpp
@@ -110,6 +110,7 @@ void CollisionShape2D::_notification(int p_what) {
 				draw_col.r = g;
 				draw_col.g = g;
 				draw_col.b = g;
+				draw_col.a *= 0.5;
 			}
 			shape->draw(get_canvas_item(), draw_col);