diff --git a/launch/sim_sample.launch b/launch/sim_sample.launch
index 5c40cb805c8cdb15e40f6cc455d6fe6e39e03190..2a22692a84d88cd1f7b69abd20a96f3f62175b9f 100644
--- a/launch/sim_sample.launch
+++ b/launch/sim_sample.launch
@@ -23,6 +23,12 @@
     <arg name="yaw"   value="0.0"/>
   </include>
 
+  <node name="cmd_vel_relay"
+        pkg="topic_tools"
+        type="relay"
+        args="/ana/ana_odom/cmd_vel_in /ana/cmd_vel">
+  </node>
+
   <node name="rviz"
         pkg="rviz"
         type="rviz"
@@ -30,4 +36,4 @@
         args="-d $(find iri_ana_gazebo)/rviz/$(arg ns).rviz">
   </node>
 
-</launch>
\ No newline at end of file
+</launch>
diff --git a/launch/spawn.launch b/launch/spawn.launch
index 8e44044fe0c13945373bf63ae774138184e70f5b..9a350e713af1ca95e2fd9cb76e0395c937fb6e65 100644
--- a/launch/spawn.launch
+++ b/launch/spawn.launch
@@ -22,4 +22,4 @@
   
   </group>
 
-</launch>
\ No newline at end of file
+</launch>