add import subprocess
diff --git a/bin/download_manager.py b/bin/download_manager.py
index 2a4cab9..dde80f6 100755
--- a/bin/download_manager.py
+++ b/bin/download_manager.py
@@ -5,6 +5,7 @@
 import dbus
 import dbus.service
 import dbus.mainloop.glib
+import subprocess
 import Openbmc
 if (len(sys.argv) < 2):
 	print "Usage:  download_manager.py [system name]"