diff --git a/launch/mavros_posix_sitl.launch b/launch/mavros_posix_sitl.launch
index 32a21fcf3b..558f3bbadb 100644
--- a/launch/mavros_posix_sitl.launch
+++ b/launch/mavros_posix_sitl.launch
@@ -18,6 +18,7 @@
 
     <include file="$(find px4)/launch/mavros.launch">
         <arg name="ns" value="$(arg ns)"/>
+        <arg name="gcs_url" value=""/> <!-- GCS link is provided by SITL -->
         <arg name="fcu_url" value="$(arg fcu_url)"/>
     </include>
 </launch>