diff --git a/installer.sh b/installer.sh
index fbf6714..ac4da23 100644
--- a/installer.sh
+++ b/installer.sh
@@ -1,27 +1,6 @@
 #!/usr/bin/env bash
 
-uid=$(id -u)
-if [ "$uid" != "0" ]; then
-    echo "Command must be executed as privileged user"
-    exit 0
-fi
-case "$1" in
-install)
-    echo "Try to find php-selector for hestiacp"
-    update-alternatives --display php | grep hestiacp-php-selector
-    if [ $? -ne 0 ]; then
-        echo "Register php-selector"
-        update-alternatives --install /usr/bin/php php /usr/bin/hestiacp-php-selector 1
-        if [ ! -e /etc/hestia_php_selector/system/php.path ]; then
-            mkdir -p /etc/hestia_php_selector/system/
-            current_path_to_php=$(readlink -f /usr/bin/php)
-            echo "$current_path_to_php" > /etc/hestia_php_selector/system/php.path
-            chmod 644 /etc/hestia_php_selector/system/php.path
-        fi
-        /usr/bin/hestiacp-php-admin add
-    fi
-;;
-delete)
+function restore_system() {
     current_php=$(readlink -f /usr/bin/php)
     if [ "$current_php" == "/usr/bin/hestiacp-php-selector" ]; then
         if [ -e /etc/hestia_php_selector/system/php.path ]; then
@@ -32,8 +11,8 @@ delete)
                     update-alternatives --set php "$php_sys"
                 else
                     php_ver=$(echo "$php_sys" | grep -o -P "php\d+.?\d+")
-                    is_sim_php=`update-alternatives --display php | tail -n +3 | grep -Po "^(.+?)(?= -)" | grep "$php_ver" | head -n1`
-                    fst_php=`update-alternatives --display php | tail -n +3 | grep -Po "^(.+?)(?= -)" | head -n1`
+                    is_sim_php=$(update-alternatives --display php | tail -n +3 | grep -Po "^(.+?)(?= -)" | grep "$php_ver" | head -n1)
+                    fst_php=$(update-alternatives --display php | tail -n +3 | grep -Po "^(.+?)(?= -)" | head -n1)
                     if [ -n "$is_sim_php" ]; then
                         update-alternatives --set php "$is_sim_php"
                     else
@@ -45,13 +24,41 @@ delete)
             fi
         fi
     fi
+}
+
+uid=$(id -u)
+if [ "$uid" != "0" ]; then
+    echo "Command must be executed as privileged user"
+    exit 0
+fi
+case "$1" in
+install)
+    echo "Try to find php-selector for hestiacp"
+    update-alternatives --display php | grep hestiacp-php-selector
+    if [ $? -ne 0 ]; then
+        echo "Register php-selector"
+        update-alternatives --install /usr/bin/php php /usr/bin/hestiacp-php-selector 1
+        if [ ! -e /etc/hestia_php_selector/system/php.path ]; then
+            mkdir -p /etc/hestia_php_selector/system/
+            current_path_to_php=$(readlink -f /usr/bin/php)
+            echo "$current_path_to_php" >/etc/hestia_php_selector/system/php.path
+            chmod 644 /etc/hestia_php_selector/system/php.path
+        fi
+        /usr/bin/hestiacp-php-admin add
+    fi
+    ;;
+delete)
+    restore_system
     update-alternatives --display php | grep hestiacp-php-selector
     if [ $? -eq 0 ]; then
         update-alternatives --remove php /usr/bin/hestiacp-php-selector
     fi
     /usr/bin/hestiacp-php-admin remove-all
-;;
+    ;;
+off)
+    restore_system
+    ;;
 *)
     echo "Unknown command"
-;;
-esac
\ No newline at end of file
+    ;;
+esac