diff --git a/scripts/install b/scripts/install
index 46d0a5f..5b21be4 100644
--- a/scripts/install
+++ b/scripts/install
@@ -85,6 +85,14 @@ ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --
 # Copy files to the right place
 cp -r ../conf/phpsysinfo.ini "$final_path"
 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Configuring system user..." --time --weight=1
+
+# Create a system user
+ynh_system_user_create --username=$app
+
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index c0d9ef4..06998c5 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -53,6 +53,14 @@ ynh_script_progression --message="Restoring the app main directory..."
 
 ynh_restore_file --origin_path="$final_path"
 
+#=================================================
+# RECREATE THE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Recreating the dedicated system user..." --time --weight=1
+
+# Create the dedicated user (if not existing)
+ynh_system_user_create --username=$app
+
 #=================================================
 # RESTORE THE PHP-FPM CONFIGURATION
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index ee7d7e4..1f4a986 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -22,7 +22,6 @@ is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 language=$(ynh_app_setting_get --app=$app --key=language)
 display_mode=$(ynh_app_setting_get --app=$app --key=display_mode)
-user=$(ynh_app_setting_get --app=$app --key=user)
 
 #=================================================
 # CHECK VERSION
@@ -102,6 +101,14 @@ then
     ynh_add_nginx_config
 fi
 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Making sure dedicated system user exists..." --time --weight=1
+
+# Create a dedicated user (if not existing)
+ynh_system_user_create --username=$app
+
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================