diff --git a/scripts/upgrade b/scripts/upgrade
index 5c787ad..9c1bf3f 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -35,8 +35,6 @@ then
 	ynh_setup_source --dest_dir=$src_path
 fi
 
-sudo unzip -q /tmp/cesium-*-web.zip -d $src_path
-sudo rm -f /tmp/cesium-*-web.zip
 sudo chown -R www-data: $src_path
 
 # Modify Nginx configuration file and copy it to Nginx conf directory