diff --git a/test/lib/aux.sh b/test/lib/aux.sh
index 166928d27..fc03b70b5 100644
--- a/test/lib/aux.sh
+++ b/test/lib/aux.sh
@@ -430,6 +430,7 @@ teardown_devs_prefixed() {
 
 			test "$progress" = 1 || break
 
+			sleep .1
 			udev_wait
 			wait
 			progress=0