diff --git a/install-pvusb-backend.sh b/install-pvusb-backend.sh
index 9032f28..10274b2 100755
--- a/install-pvusb-backend.sh
+++ b/install-pvusb-backend.sh
@@ -12,9 +12,9 @@ cp misc/usb_remove /usr/lib/qubes/usb_remove
 cp misc/qubes_usb.rules /etc/udev/rules.d/99-qubes_usb.rules
 
 # Reload PVUSB backend and cleanup xenstore
-rmmod xen-usbback || true
+rmmod xen-usbback > /dev/null 2>&1 || true
 modprobe xen-usbback
-xenstore-rm qubes-usb-devices
+xenstore-rm qubes-usb-devices > /dev/null 2>&1 || true
 
 # Configure udevd and make it re-populate xenstore
 udevadm control --reload-rules