diff --git a/scripts/upgrade b/scripts/upgrade
index 6a37e5a..028685c 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -30,7 +30,7 @@ ynh_script_progression --message="Upgrading source files..."
 ynh_setup_source --dest_dir="$install_dir" --full_replace=1 --keep=".config"
 
 chmod -R o-rwx "$install_dir"
-chmod -R "$app:" "$install_dir"
+chown -R "$app:" "$install_dir"
 
 _set_BasePathOverride