diff --git a/hooks/conf_regen/01-yunohost b/hooks/conf_regen/01-yunohost
index 9e78613f6..45d0b58f6 100755
--- a/hooks/conf_regen/01-yunohost
+++ b/hooks/conf_regen/01-yunohost
@@ -76,10 +76,10 @@ do_init_regen() {
     chown ynh-portal:www-data /usr/share/yunohost/portallogos
 
     mkdir -p /var/cache/yunohost-portal/sessions
-    chown ynh-portal /var/cache/yunohost-portal
-    chmod 500 /var/cache/yunohost-portal
-    chown ynh-portal /var/cache/yunohost-portal/sessions
-    chmod 700 /var/cache/yunohost-portal/sessions
+    chown ynh-portal:www-data /var/cache/yunohost-portal
+    chmod 510 /var/cache/yunohost-portal
+    chown ynh-portal:www-data /var/cache/yunohost-portal/sessions
+    chmod 710 /var/cache/yunohost-portal/sessions
 
     # YunoHost services
     cp yunohost-api.service /etc/systemd/system/yunohost-api.service
@@ -267,10 +267,10 @@ do_post_regen() {
     chown ynh-portal:www-data /usr/share/yunohost/portallogos
 
     mkdir -p /var/cache/yunohost-portal/sessions
-    chown ynh-portal /var/cache/yunohost-portal
-    chmod 500 /var/cache/yunohost-portal
-    chown ynh-portal /var/cache/yunohost-portal/sessions
-    chmod 700 /var/cache/yunohost-portal/sessions
+    chown ynh-portal:www-data /var/cache/yunohost-portal
+    chmod 510 /var/cache/yunohost-portal
+    chown ynh-portal:www-data /var/cache/yunohost-portal/sessions
+    chmod 710 /var/cache/yunohost-portal/sessions
 
     # Domain settings
     mkdir -p /etc/yunohost/domains