diff --git a/install_ubuntu.sh b/install_ubuntu.sh
index 2c2f35d..ff4304b 100755
--- a/install_ubuntu.sh
+++ b/install_ubuntu.sh
@@ -1,7 +1,10 @@
 #!/bin/bash
 # ubuntu hangs if network interface is not optional
-sudo sed -i '/dhcp4/a\      optional: yes' /etc/netplan/00-installer-config-wifi.yaml
-sudo sed -i '/dhcp4/a\      optional: yes' /etc/netplan/00-installer-config.yaml
+if ! sudo grep -r optional /etc/netplan
+then	
+  sudo sed -i '/dhcp4/a\      optional: yes' /etc/netplan/00-installer-config-wifi.yaml
+  sudo sed -i '/dhcp4/a\      optional: yes' /etc/netplan/00-installer-config.yaml
+fi  
 #  Add firefox repo
 echo "deb [trusted=yes] https://packages.mozilla.org/apt mozilla main" | sudo tee -a /etc/apt/sources.list.d/mozilla.list > /dev/null
 # By default ubuntu installs firefox from snap, so I want to disable it
@@ -14,21 +17,23 @@ Pin-Priority: 1000
 sudo apt update
 sudo apt install -y nala
 sudo nala install -y \
-xorg 		`# for graphics` \
-make 		`# for compiling gui` \
-gcc  		`# for compiling gui` \
-libx11-dev  	`# for compiling dwm` \
-libxft-dev  	`# for compiling dwm` \
-libxinerama-dev `# for compiling dwm` \
-libharfbuzz-dev `# for compiling st` \
-suckless-tools  `# for dmenu` \
-ncdu  		`# for disk usage analysys` \
-brightnessctl   `# for keyboard backlight` \
-xcompmgr  	`# for st opacity` \
+xorg                         `# for graphics` \
+make                         `# for compiling gui` \
+gcc                          `# for compiling gui` \
+libx11-dev                   `# for compiling dwm` \
+libxft-dev                   `# for compiling dwm` \
+libxinerama-dev              `# for compiling dwm` \
+libharfbuzz-dev              `# for compiling st` \
+suckless-tools               `# for dmenu` \
+ncdu                         `# for disk usage analysys` \
+brightnessctl                `# for keyboard backlight` \
+xcompmgr                     `# for st opacity` \
+xwallpaper                   `# for background` \
+ubuntu-wallpapers-jammy      `# backgrounds` \
+xfe                          `# classic file manager` \
+surf                         `# suckless browser` \
 telegram-desktop \
 slack \
-xfe 		`# classic file manager` \
-surf 		`# suckless browser` \
 firefox \
 python3
 
@@ -47,7 +52,7 @@ then
 fi
 
 for tool in dwm st sent
-do	
+do    
   # compiling dwm
   if ! command -v $tool &> /dev/null
   then
@@ -60,7 +65,7 @@ done
 echo dwm > ~/.xinitrc  # for starting dwm when startx
 
 for tool in create_systemd_service.py create_systemd_timer.py set_brightness.sh update_gui.sh
-do	
+do    
   if ! command -v $tool &> /dev/null
   then
     sudo cp $tool /usr/local/bin
@@ -81,5 +86,6 @@ echo "firefox &" > $HOME/.dwm/autostart.sh
 echo "xcompmgr &" >> $HOME/.dwm/autostart.sh
 echo "telegram-desktop &" >> $HOME/.dwm/autostart.sh
 echo "st &" >> $HOME/.dwm/autostart.sh
-echo "DISPLAY=:0 xhost +local:" >> $HOME/.dwm/autostart.sh # give permissions to display
+echo "xhost +local:" >> $HOME/.dwm/autostart.sh # give permissions to display
+echo "xwallpaper --stretch /usr/share/backgrounds/Blue_flower_by_Elena_Stravoravdi.jpg" >> $HOME/.dwm/autostart.sh # give permissions to display
 chmod +x $HOME/.dwm/autostart.sh