diff --git a/test/TEST-30-ISCSI/test.sh b/test/TEST-30-ISCSI/test.sh
index 97de433c..b9e61e65 100755
--- a/test/TEST-30-ISCSI/test.sh
+++ b/test/TEST-30-ISCSI/test.sh
@@ -165,7 +165,7 @@ test_setup() {
     (
         export initdir=$TESTDIR/overlay
         . $basedir/dracut-init.sh
-        inst_multiple sfdisk mkfs.ext3 poweroff cp umount setsid dd
+        inst_multiple sfdisk mkfs.ext3 poweroff cp umount setsid dd sync
         inst_hook initqueue 01 ./create-client-root.sh
         inst_hook initqueue/finished 01 ./finished-false.sh
         inst_simple ./99-idesymlinks.rules /etc/udev/rules.d/99-idesymlinks.rules