diff --git a/docker/simulator-visualizer/entrypoint.sh b/docker/simulator-visualizer/entrypoint.sh
index a4926a2da9..a67fd156c3 100644
--- a/docker/simulator-visualizer/entrypoint.sh
+++ b/docker/simulator-visualizer/entrypoint.sh
@@ -5,7 +5,7 @@ source "/opt/ros/$ROS_DISTRO/setup.bash"
 source /opt/autoware/setup.bash
 
 # Start VNC server
-vncserver :1 -auth $HOME/.Xauthority -geometry 1024x768 -depth 16 > /dev/null 2>&1
+vncserver :1 -auth $HOME/.Xauthority -geometry 1024x768 -depth 16 >/dev/null 2>&1
 VNC_RESULT=$?
 
 if [ $VNC_RESULT -ne 0 ]; then
@@ -16,7 +16,8 @@ fi
 sleep 2
 
 # Start NoVNC
-websockify --web=/usr/share/novnc/ --cert=/etc/ssl/certs/novnc.crt --key=/etc/ssl/private/novnc.key 6080 localhost:5901 & > /dev/null 2>&1
+websockify --web=/usr/share/novnc/ --cert=/etc/ssl/certs/novnc.crt --key=/etc/ssl/private/novnc.key 6080 localhost:5901 &
+>/dev/null 2>&1
 
 # Print message
 echo -e "\033[32m-------------------------------------------------------------------------\033[0m"
diff --git a/docker/simulator-visualizer/xstartup b/docker/simulator-visualizer/xstartup
index 07fd3280d6..fb28abdc18 100644
--- a/docker/simulator-visualizer/xstartup
+++ b/docker/simulator-visualizer/xstartup
@@ -5,4 +5,4 @@ export XKL_XMODMAP_DISABLE=1
 export DESKTOP_SESSION=LXDE
 export XDG_CURRENT_DESKTOP=LXDE
 startlxde &
-sleep infinity
\ No newline at end of file
+sleep infinity
diff --git a/docker/vnc/entrypoint.sh b/docker/vnc/entrypoint.sh
index 84bb956959..f161ef8b4d 100644
--- a/docker/vnc/entrypoint.sh
+++ b/docker/vnc/entrypoint.sh
@@ -5,7 +5,7 @@ source "/opt/ros/$ROS_DISTRO/setup.bash"
 source /opt/autoware/setup.bash
 
 # Start VNC server
-vncserver :1 -auth $HOME/.Xauthority -geometry 1024x768 -depth 16 > /dev/null 2>&1
+vncserver :1 -auth $HOME/.Xauthority -geometry 1024x768 -depth 16 >/dev/null 2>&1
 VNC_RESULT=$?
 
 if [ $VNC_RESULT -ne 0 ]; then
@@ -16,7 +16,8 @@ fi
 sleep 2
 
 # Start NoVNC
-websockify --web=/usr/share/novnc/ --cert=/etc/ssl/certs/novnc.crt --key=/etc/ssl/private/novnc.key 6080 localhost:5901 & > /dev/null 2>&1
+websockify --web=/usr/share/novnc/ --cert=/etc/ssl/certs/novnc.crt --key=/etc/ssl/private/novnc.key 6080 localhost:5901 &
+>/dev/null 2>&1
 
 # Configure ngrok
 ngrok config add-authtoken $NGROK_AUTH_TOKEN
diff --git a/docker/vnc/xstartup b/docker/vnc/xstartup
index 07fd3280d6..fb28abdc18 100644
--- a/docker/vnc/xstartup
+++ b/docker/vnc/xstartup
@@ -5,4 +5,4 @@ export XKL_XMODMAP_DISABLE=1
 export DESKTOP_SESSION=LXDE
 export XDG_CURRENT_DESKTOP=LXDE
 startlxde &
-sleep infinity
\ No newline at end of file
+sleep infinity