diff --git a/description/robot_core.xacro b/description/robot_core.xacro
index 6059663..6811e92 100644
--- a/description/robot_core.xacro
+++ b/description/robot_core.xacro
@@ -238,7 +238,7 @@
             <geometry>
                 <cylinder radius="0.04" length="0.05"/>
             </geometry>
-            <material name="white"/>
+            <material name="black"/>
         </visual>
         <collision>
             <geometry>