diff --git a/install/initial/initial.sh b/install/initial/initial.sh
index 0324acd..ba4245f 100644
--- a/install/initial/initial.sh
+++ b/install/initial/initial.sh
@@ -42,7 +42,7 @@ function install_zsh () {
 function setup_swapfile () {
     printf "Swapfile setup\n"
     printf "Please enter swapfile capacity (example : ~ M)\n"
-    read swapcap
+    read -r swapcap
     if [ "$1" == "btrfs" ]; then
         sudo truncate -s 0 /swapfile
         sudo chattr +C /swapfile
@@ -73,13 +73,13 @@ function setup_time () {
 
 function install_yay () {
     printf "AUR setup (yay)\n"
-    cd "$HOME"/Temp
+    cd "$HOME"/Temp || exit
     sudo pacman -Sy
     sudo pacman -S --noconfirm git
     git clone https://aur.archlinux.org/yay.git
-    cd yay
+    cd yay || exit
     makepkg -si
-    cd "$HOME"
+    cd "$HOME" || exit
 }
 
 function install_fonts () {
@@ -87,12 +87,19 @@ function install_fonts () {
     sudo pacman -S --noconfirm noto-fonts noto-fonts-cjk noto-fonts-emoji noto-fonts-extra
 }
 
+function install_ca () {
+    printf "Install CA\n"
+    cd "$HOME"/Temp || exit
+    curl -OLk https://192.168.1.64:8443/www/suti7/tx1310m3_CA.pem
+    sudo trust anchor ./tx1310m3_CA.pem
+}
+
 printf "Do you want to the initial setup? (yes or no)\n"
-read temp
+read -r temp
 
 if [ "$temp" == "yes" ]; then
     printf "What is the file system of the root directory? (ext4 or btrfs)\n"
-    read filesystem
+    read -r filesystem
 
     if [ "$filesystem" == "btrfs" ]; then
         setup_swapfile btrfs
@@ -105,6 +112,7 @@ if [ "$temp" == "yes" ]; then
     install_fonts
     install_yay
     install_zsh
+    install_ca
 
     printf "Finished.\n"
 else