diff --git a/test/blobstore/blobstore.sh b/test/blobstore/blobstore.sh
index 52799649a..fce187c5b 100755
--- a/test/blobstore/blobstore.sh
+++ b/test/blobstore/blobstore.sh
@@ -11,7 +11,7 @@ rootdir=$(readlink -f $testdir/../..)
 source $rootdir/test/common/autotest_common.sh
 
 # Nvme0 target configuration
-$rootdir/scripts/gen_nvme.sh --json-with-subsystems > $testdir/blobcli.json
+"$rootdir/scripts/gen_nvme.sh" --json-with-subsystems -n 1 > "$testdir/blobcli.json"
 
 # generate random data file for import/export diff
 dd if=/dev/urandom of=$testdir/test.pattern bs=1M count=1