diff --git a/tools/regression/geom_nop/conf.sh b/tools/regression/geom_nop/conf.sh
index 0dc979713c1d..e38e10c9afe3 100644
--- a/tools/regression/geom_nop/conf.sh
+++ b/tools/regression/geom_nop/conf.sh
@@ -4,4 +4,11 @@
 class="nop"
 base=`basename $0`
 
+gnop_test_cleanup()
+{
+	[ -c /dev/${us}.nop ] && gnop destroy ${us}.nop
+	geom_test_cleanup
+}
+trap gnop_test_cleanup ABRT EXIT INT TERM
+
 . `dirname $0`/../geom_subr.sh
diff --git a/tools/regression/geom_nop/test-1.t b/tools/regression/geom_nop/test-1.t
index f08f71da8bce..4d6b65d5ff8f 100644
--- a/tools/regression/geom_nop/test-1.t
+++ b/tools/regression/geom_nop/test-1.t
@@ -5,21 +5,16 @@
 
 echo "1..1"
 
-us=45
+us=$(attach_md -t malloc -s 1M) || exit 1
 
-mdconfig -a -t malloc -s 1M -u $us || exit 1
-
-gnop create /dev/md${us} || exit 1
+gnop create /dev/${us} || exit 1
 
 # Size of created device should be 1MB.
 
-size=`diskinfo /dev/md${us}.nop | awk '{print $3}'`
+size=`diskinfo /dev/${us}.nop | awk '{print $3}'`
 
 if [ $size -eq 1048576 ]; then
 	echo "ok 1"
 else
 	echo "not ok 1"
 fi
-
-gnop destroy md${us}.nop
-mdconfig -d -u $us
diff --git a/tools/regression/geom_nop/test-2.t b/tools/regression/geom_nop/test-2.t
index e0ddb17abf86..742234591db6 100644
--- a/tools/regression/geom_nop/test-2.t
+++ b/tools/regression/geom_nop/test-2.t
@@ -3,20 +3,19 @@
 
 . `dirname $0`/conf.sh
 
-us=45
-src=`mktemp /tmp/$base.XXXXXX` || exit 1
-dst=`mktemp /tmp/$base.XXXXXX` || exit 1
+src=`mktemp $base.XXXXXX` || exit 1
+dst=`mktemp $base.XXXXXX` || exit 1
 
 echo "1..1"
 
 dd if=/dev/random of=${src} bs=1m count=1 >/dev/null 2>&1
 
-mdconfig -a -t malloc -s 1M -u $us || exit 1
+us=$(attach_md -t malloc -s 1M) || exit 1
 
-gnop create /dev/md${us} || exit 1
+gnop create /dev/${us} || exit 1
 
-dd if=${src} of=/dev/md${us}.nop bs=1m count=1 >/dev/null 2>&1
-dd if=/dev/md${us}.nop of=${dst} bs=1m count=1 >/dev/null 2>&1
+dd if=${src} of=/dev/${us}.nop bs=1m count=1 >/dev/null 2>&1
+dd if=/dev/${us}.nop of=${dst} bs=1m count=1 >/dev/null 2>&1
 
 if [ `md5 -q ${src}` != `md5 -q ${dst}` ]; then
 	echo "not ok 1"
@@ -24,6 +23,4 @@ else
 	echo "ok 1"
 fi
 
-gnop destroy md${us}.nop
-mdconfig -d -u $us
 rm -f ${src} ${dst}