diff --git a/scripts/backup b/scripts/backup
index f8e82aa..38d96c5 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -22,15 +22,11 @@ ynh_print_info --message="Declaring files to be backed up..."
 ynh_backup --src_path="$install_dir"
 
 #=================================================
-# BACKUP THE NGINX CONFIGURATION
+# SYSTEM CONFIGURATION
 #=================================================
 
 ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# BACKUP SYSTEMD
-#=================================================
-
 ynh_backup --src_path="/etc/systemd/system/$app.service"
 
 #=================================================
diff --git a/scripts/install b/scripts/install
index aedf981..9d1fe35 100644
--- a/scripts/install
+++ b/scripts/install
@@ -45,7 +45,6 @@ ynh_script_progression --message="Configuring NGINX web server..." --weight=2
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-env_path="$PATH"
 # Create a dedicated systemd config
 ynh_add_systemd_config
 
diff --git a/scripts/upgrade b/scripts/upgrade
index dce977e..8ecb28a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,12 +9,6 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# CHECK VERSION
-#=================================================
-
-upgrade_type=$(ynh_check_app_version_changed)
-
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
@@ -34,14 +28,10 @@ ynh_remove_logrotate
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
+ynh_script_progression --message="Upgrading source files..." --weight=10
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]
-then
-	ynh_script_progression --message="Upgrading source files..." --weight=10
-
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$install_dir" --keep="server/config.js"
-fi
+# Download, check integrity, uncompress and patch the source from app.src
+ynh_setup_source --dest_dir="$install_dir" --keep="server/config.js"
 
 chmod -R o-rwx "$install_dir"
 chown -R "$app:www-data" "$install_dir"
@@ -62,7 +52,6 @@ ynh_script_progression --message="Upgrading NGINX web server configuration..." -
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-env_path="$PATH"
 # Create a dedicated systemd config
 ynh_add_systemd_config