diff --git a/ros_ign_gazebo/launch/ign_gazebo.launch.py.in b/ros_ign_gazebo/launch/ign_gazebo.launch.py.in
index 7adb02ce..62cca3ff 100644
--- a/ros_ign_gazebo/launch/ign_gazebo.launch.py.in
+++ b/ros_ign_gazebo/launch/ign_gazebo.launch.py.in
@@ -31,7 +31,7 @@ def generate_launch_description():
         DeclareLaunchArgument('ign_args', default_value='',
                               description='Arguments to be passed to Ignition Gazebo'),
         # Ignition Gazebo's major version
-        DeclareLaunchArgument('ign_version', default_value='@IGN_GAZEBO_VER@',
+        DeclareLaunchArgument('ign_version', default_value='@GZ_SIM_VER@',
                               description='Ignition Gazebo\'s major version'),
         ExecuteProcess(
             cmd=['ign gazebo',