diff --git a/nav2_bringup/launch/nav2_bringup_launch.py b/nav2_bringup/launch/nav2_bringup_launch.py
index d0ad10b55c9a82d89cf3f0bb6de83d53be2caafe..fc47675d99d2bc4a2d1a15a6a34151ed64feaed8 100644
--- a/nav2_bringup/launch/nav2_bringup_launch.py
+++ b/nav2_bringup/launch/nav2_bringup_launch.py
@@ -94,7 +94,7 @@ def generate_launch_description():
 
     start_rviz_cmd = launch.actions.ExecuteProcess(
         cmd=[os.path.join(get_package_prefix('rviz2'), 'lib/rviz2/rviz2'),
-            [ "__log_level:=fatal"]],
+            [ "__log_level:=fatal"],
             ['-d', rviz_config_file]],
         cwd=[launch_dir], output='screen')