diff --git a/test/vagrant-spec/scripts/ubuntu-run.virtualbox.sh b/test/vagrant-spec/scripts/ubuntu-run.virtualbox.sh
index 0342a6901..32a80bf94 100644
--- a/test/vagrant-spec/scripts/ubuntu-run.virtualbox.sh
+++ b/test/vagrant-spec/scripts/ubuntu-run.virtualbox.sh
@@ -3,7 +3,7 @@ set -x
 
 export VAGRANT_EXPERIMENTAL="${VAGRANT_EXPERIMENTAL:-1}"
 export VAGRANT_SPEC_BOX="${VAGRANT_SPEC_BOX}"
-vagrant vagrant-spec ${VAGRANT_SPEC_ARGS} /vagrant/test/vagrant-spec/configs/vagrant-spec.config.virtualbox.rb
+vagrant-spec ${VAGRANT_SPEC_ARGS} --config /vagrant/test/vagrant-spec/configs/vagrant-spec.config.virtualbox.rb
 result=$?
 
 exit $result