diff --git a/urdf/diffbot_description.urdf.xacro b/urdf/diffbot_description.urdf.xacro
index ecf7939..23cb691 100644
--- a/urdf/diffbot_description.urdf.xacro
+++ b/urdf/diffbot_description.urdf.xacro
@@ -73,7 +73,7 @@
       <origin xyz="0 -0.125 ${z_offset}" rpy="${PI / 2} 0 0" />
       <parent link="${prefix}base_link" />
       <child link="${prefix}right_wheel" />
-      <axis xyz="0 0 -1"/>
+      <axis xyz="0 0 1"/>
       <limit effort="1" velocity="20" />
       <joint_properties friction="0.0"/>
     </joint>