diff --git a/qubes-rpc/qubes.WaitForSession b/qubes-rpc/qubes.WaitForSession
index 39042f7..a7c2b59 100644
--- a/qubes-rpc/qubes.WaitForSession
+++ b/qubes-rpc/qubes.WaitForSession
@@ -1,2 +1,2 @@
 read USERNAME
-su -c 'echo $$ >> /tmp/qubes-session-waiter; [ ! -f /tmp/qubes-session-env ] && exec sleep 365d' - "$USERNAME"
+su -c 'echo $$ >> /tmp/qubes-session-waiter; [ ! -f /tmp/qubes-session-env ] && exec sleep 365d' - "$USERNAME" 2> /dev/null