diff --git a/.env b/.env
index 264357f..2f5de5f 100644
--- a/.env
+++ b/.env
@@ -7,7 +7,6 @@ MAVROS1_PORT=14561
 FDM_PORT_IN=9002
 GSTREAMER_UDP_PORT=5600
 ROS_MASTER_URI="http://0.0.0.0:11311"
-RMW_IMPLEMENTATION=rmw_cyclonedds_cpp
 
 
 ARDUPILOT_VEHICLE="-v copter -f gazebo-mu --model=JSON -L CitadelHill"