diff --git a/gns3server/compute/iou/iou_vm.py b/gns3server/compute/iou/iou_vm.py
index a5f7eeeba..4768614f9 100644
--- a/gns3server/compute/iou/iou_vm.py
+++ b/gns3server/compute/iou/iou_vm.py
@@ -26,8 +26,6 @@ import re
 import asyncio
 import subprocess
 import shutil
-import argparse
-import threading
 import configparser
 import struct
 import hashlib