diff --git a/urdf/sensors.xacro b/urdf/sensors.xacro
index b23e16f531ce9de313163990b18d3eea8079fd9c..0049c54d17bebf12ec580abdf9d3823af3f6a402 100644
--- a/urdf/sensors.xacro
+++ b/urdf/sensors.xacro
@@ -32,6 +32,10 @@
       </collision>
     </link>
     
+    <gazebo reference="${name}_box">
+      <material>Gazebo/Black</material>
+    </gazebo>
+    
     <joint name="joint_${parent}_to_${name}_box" type="fixed" >
       <parent link="${parent}"/>
       <child link="${name}_box"/>