diff --git a/lib/controller/AttackController.py b/lib/controller/AttackController.py
index 664ef01a..211db0b5 100644
--- a/lib/controller/AttackController.py
+++ b/lib/controller/AttackController.py
@@ -4,6 +4,7 @@
 ### Core > Attack Controller
 ###
 import datetime
+import sys
 from humanfriendly import format_timespan
 
 from lib.core.AttackScope import AttackScope
@@ -222,4 +223,4 @@ def __run_for_multi_targets(self, args):
             self.attack_scope.add_target(target)
 
         # Run the attack
-        self.attack_scope.attack()
\ No newline at end of file
+        self.attack_scope.attack()