diff --git a/linux/files/setup-loopback-device.upstart b/linux/files/setup-loopback-device.upstart
index a1acd24..2b63ac7 100644
--- a/linux/files/setup-loopback-device.upstart
+++ b/linux/files/setup-loopback-device.upstart
@@ -1,12 +1,10 @@
 description "Setup {{ device_name }} device"
 
 start on filesystem
-task
 
-pre-start script
-  if /sbin/losetup {{ device_name }}; then
-    stop ; exit 0
-  fi
+pre-start exec losetup {{ device_name }} {{ file }}
+post-stop exec losetup -d {{ device_name }}
+
+script
+  while losetup {{ device_name }} ; do sleep 60 ; done
 end script
-
-exec losetup {{ device_name }} {{ file }}