diff --git a/darwin_description/launch/darwin_sim.launch b/darwin_description/launch/darwin_sim.launch
index cc04f7630493d0bdd9e163335e525765dc509e70..0bf1a44c5e24ca6f2214943bc880aab641211abc 100644
--- a/darwin_description/launch/darwin_sim.launch
+++ b/darwin_description/launch/darwin_sim.launch
@@ -10,10 +10,12 @@
     <arg name="robot" value="$(arg robot)" />
   </include>
 
-  <include file="$(find darwin_driver)/launch/darwin.launch">
-    <arg name="device" value="/dev/pts/6"/>
-    <arg name="simulate" value="True"/>
-  </include>
+  <group ns="darwin">
+    <include file="$(find darwin_driver)/launch/darwin.launch"> 
+      <arg name="device" value="/dev/pts/24"/>
+      <arg name="simulate" value="True"/>
+    </include>
+  </group>
 
 </launch>