diff --git a/scripts/vagrant/create_vbox.sh b/scripts/vagrant/create_vbox.sh
index d8fde23de..f913c2013 100755
--- a/scripts/vagrant/create_vbox.sh
+++ b/scripts/vagrant/create_vbox.sh
@@ -130,9 +130,9 @@ done
 
 shift "$((OPTIND-1))"   # Discard the options and sentinel --
 
-SPDK_VAGRANT_DISTRO=( "$@" )
+SPDK_VAGRANT_DISTRO="$*"
 
-case "${SPDK_VAGRANT_DISTRO[0]}" in
+case "${SPDK_VAGRANT_DISTRO}" in
 	centos7)
 		export SPDK_VAGRANT_DISTRO
 	;;