diff --git a/launch/description.launch b/launch/description.launch
index b0b30c019aff32ff237fa809e626e4b1983750d4..23ad7e3fb2a6eece3b78b23267902b820e277684 100644
--- a/launch/description.launch
+++ b/launch/description.launch
@@ -15,7 +15,7 @@
           pkg="robot_state_publisher"
           type="robot_state_publisher"
           name="state_publisher">
-      <param name="tf_prefix" type="string" value="/$(arg ns)"/>
+      <param name="tf_prefix" type="string" value="$(arg ns)"/>
       <param name="publish_frequency" type="double" value="20.0"/>
     </node>