diff --git a/examples/turtlebot3-gazebo.nix b/examples/turtlebot3-gazebo.nix
index 83f9ac7098..3b09eb33f1 100755
--- a/examples/turtlebot3-gazebo.nix
+++ b/examples/turtlebot3-gazebo.nix
@@ -1,5 +1,4 @@
 # Run:
-# export TURTLEBOT3_MODEL=burger
 # roslaunch turtlebot3_gazebo turtlebot3_world.launch
 # roslaunch turtlebot3_teleop turtlebot3_teleop_key.launch
 
@@ -9,14 +8,12 @@ with pythonPackages;
 
 mkShell {
   buildInputs = [
-    catkin
     glibcLocales
     (buildEnv { paths = [
+      cmake
       turtlebot3-description
       turtlebot3-teleop
       turtlebot3-gazebo
-      # Doesn't work out of the box yet because path needs to added to
-      # GAZEBO_PLUGIN_PATH
       gazebo-plugins
       xacro
     ]; })
@@ -24,4 +21,5 @@ mkShell {
 
   ROS_HOSTNAME = "localhost";
   ROS_MASTER_URI = "http://localhost:11311";
+  TURTLEBOT3_MODEL = "burger";
 }