diff --git a/nova/tests/live_migration/hooks/utils.sh b/nova/tests/live_migration/hooks/utils.sh
index 99872b4fe460..25425215036a 100755
--- a/nova/tests/live_migration/hooks/utils.sh
+++ b/nova/tests/live_migration/hooks/utils.sh
@@ -3,7 +3,7 @@
 function run_tempest {
     local message=$1
     local tempest_regex=$2
-    sudo -H -u tempest tox -eall -- --concurrency=$TEMPEST_CONCURRENCY $tempest_regex
+    sudo -H -u tempest tox -eall -- $tempest_regex --concurrency=$TEMPEST_CONCURRENCY
     exitcode=$?
     if [[ $exitcode -ne 0 ]]; then
       die $LINENO "$message failure"