diff --git a/scripts/backup b/scripts/backup
index 69dd047..9d63962 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -28,23 +28,13 @@ ynh_backup --src_path="$install_dir"
 ynh_backup --src_path="$data_dir" --is_big
 
 #=================================================
-# BACKUP THE NGINX CONFIGURATION
+# SYSTEM CONFIGURATION
 #=================================================
 
 ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# BACKUP THE PHP-FPM CONFIGURATION
-#=================================================
-
 ynh_backup --src_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
 
-#=================================================
-# SPECIFIC BACKUP
-#=================================================
-# BACKUP VARIOUS FILES
-#=================================================
-
 #=================================================
 # BACKUP THE MYSQL DATABASE
 #=================================================
diff --git a/scripts/change_url b/scripts/change_url
index c9e593b..a4fcb69 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -18,16 +18,6 @@ ynh_script_progression --message="Updating NGINX web server configuration..." --
 
 ynh_change_url_nginx_config
 
-#=================================================
-# SPECIFIC MODIFICATIONS
-#=================================================
-# ...
-#=================================================
-
-#=================================================
-# GENERIC FINALISATION
-#=================================================
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/install b/scripts/install
index 13b41a3..21704ee 100755
--- a/scripts/install
+++ b/scripts/install
@@ -19,7 +19,6 @@ ynh_script_progression --message="Setting up source files..." --weight=1
 ynh_setup_source --dest_dir="$install_dir"
 
 chown -R $app:www-data "$install_dir"
-chown -R $app:www-data "$data_dir"
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -44,7 +43,7 @@ ynh_add_config --template="env" --destination="$install_dir/.env"
 #=================================================
 # INITIALIZE THE APP
 #=================================================
-ynh_script_progression --message="Initializing Koel..." --weight=1
+ynh_script_progression --message="Initializing $app..." --weight=1
 
 pushd $install_dir
 	ynh_exec_as $app php$phpversion artisan koel:init --no-assets --no-interaction --quiet
diff --git a/scripts/upgrade b/scripts/upgrade
index 30792d2..145220e 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,27 +9,15 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-upgrade_type=$(ynh_check_app_version_changed)
-
-#=================================================
-# STANDARD UPGRADE STEPS
-#=================================================
-# ENSURE DOWNWARD COMPATIBILITY
-#=================================================
-
 #=================================================
 # "REBUILD" THE APP (DEPLOY NEW SOURCES, RERUN NPM BUILD...)
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
+ynh_script_progression --message="Upgrading source files..." --weight=1
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]
-then
-	ynh_script_progression --message="Upgrading source files..." --weight=1
-
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$install_dir"
-fi
+# Download, check integrity, uncompress and patch the source from app.src
+ynh_setup_source --dest_dir="$install_dir"
 
 chown -R $app:www-data "$install_dir"