diff --git a/src/compas_viewer/scene/gridobject.py b/src/compas_viewer/scene/gridobject.py
index f9f23ad62..7133e3562 100644
--- a/src/compas_viewer/scene/gridobject.py
+++ b/src/compas_viewer/scene/gridobject.py
@@ -181,6 +181,7 @@ def make_buffer_from_data(self, data: ShaderDataType) -> dict[str, Any]:
         }
 
     def draw(self, shader: Shader):
+        shader.uniform1f("object_opacity", 1)
         shader.enable_attribute("position")
         shader.enable_attribute("color")
         shader.bind_attribute("position", self._lines_buffer["positions"])