diff --git a/test/lib/aux.sh b/test/lib/aux.sh
index dd232a298..20b684c53 100644
--- a/test/lib/aux.sh
+++ b/test/lib/aux.sh
@@ -86,6 +86,9 @@ teardown_devs() {
 	fi
 	rm -f DEVICES # devs is set in prepare_devs()
 	rm -f LOOP
+
+	# Delete any remaining dm/udev semaphores
+	dmsetup udevcomplete_all -y
 }
 
 teardown() {