diff --git a/manifest.json b/manifest.json
index 0fc6968..e0a4b16 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Video streaming platform using P2P directly in the web browser, connected to a federated network",
         "fr": "Plateforme de diffusion vidéo par P2P directement dans le navigateur, et connectée à un réseau fédéralisé"
     },
-    "version": "3.1.0~ynh3",
+    "version": "3.1.0~ynh4",
     "url": "https://github.com/Chocobozzz/PeerTube",
     "license": "AGPL-3.0-only",
     "maintainer": [
diff --git a/scripts/install b/scripts/install
index 50849a3..6261a8b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -154,7 +154,7 @@ mkdir -p "$datadir"
 
 chmod 750 "$datadir"
 chmod -R o-rwx "$datadir"
-chown -R $app:$app "$datadir"
+chown -R $app:www-data "$datadir"
 
 #=================================================
 # BUILD YARN DEPENDENCIES
diff --git a/scripts/restore b/scripts/restore
index 7f7fe79..908d617 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -89,7 +89,7 @@ mkdir -p "$datadir"
 
 chmod 750 "$datadir"
 chmod -R o-rwx "$datadir"
-chown -R $app:$app "$datadir"
+chown -R $app:www-data "$datadir"
 
 #=================================================
 # OPEN A PORT
diff --git a/scripts/upgrade b/scripts/upgrade
index 07f9da9..c84d97e 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -218,7 +218,7 @@ mkdir -p "$datadir"
 
 chmod 750 "$datadir"
 chmod -R o-rwx "$datadir"
-chown -R $app:$app "$datadir"
+chown -R $app:www-data "$datadir"
 
 #=================================================
 # UPDATE A CONFIG FILE
@@ -240,8 +240,6 @@ chown $app:$app "$final_path/config/local-production.json"
 #=================================================
 ynh_script_progression --message="Building Yarn dependencies..."
 
-chown -R "$app":"$app" $final_path
-
 pushd "$final_path"
 	ynh_use_nodejs
 	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn install --production --pure-lockfile