diff --git a/devstack/Vagrantfile b/devstack/Vagrantfile
index fc3426149..be727f4e2 100644
--- a/devstack/Vagrantfile
+++ b/devstack/Vagrantfile
@@ -97,12 +97,12 @@ enable_service rabbit mysql key tempest
 # default is to install the Java implementations of both the Monasca API and the Monasca Persister.
 
 # Uncomment one of the following two lines to choose Java or Python for the Monasca API.
-MONASCA_API_IMPLEMENTATION_LANG=${MONASCA_API_IMPLEMENTATION_LANG:-java}
-#MONASCA_API_IMPLEMENTATION_LANG=${MONASCA_API_IMPLEMENTATION_LANG:-python}
+#MONASCA_API_IMPLEMENTATION_LANG=${MONASCA_API_IMPLEMENTATION_LANG:-java}
+MONASCA_API_IMPLEMENTATION_LANG=${MONASCA_API_IMPLEMENTATION_LANG:-python}
 
 # Uncomment one of the following two lines to choose Java or Python for the Monasca Pesister.
-MONASCA_PERSISTER_IMPLEMENTATION_LANG=${MONASCA_PERSISTER_IMPLEMENTATION_LANG:-java}
-#MONASCA_PERSISTER_IMPLEMENTATION_LANG=${MONASCA_PERSISTER_IMPLEMENTATION_LANG:-python}
+#MONASCA_PERSISTER_IMPLEMENTATION_LANG=${MONASCA_PERSISTER_IMPLEMENTATION_LANG:-java}
+MONASCA_PERSISTER_IMPLEMENTATION_LANG=${MONASCA_PERSISTER_IMPLEMENTATION_LANG:-python}
 
 # This line will enable all of Monasca.
 enable_plugin monasca-api https://git.openstack.org/openstack/monasca-api