diff --git a/environments/neutron-sriov.yaml b/environments/neutron-sriov.yaml
index 5e9e15e34b..591e22609a 100755
--- a/environments/neutron-sriov.yaml
+++ b/environments/neutron-sriov.yaml
@@ -3,7 +3,7 @@ resource_registry:
   OS::TripleO::Services::NeutronSriovAgent: ../puppet/services/neutron-sriov-agent.yaml
 
 parameter_defaults:
-  NeutronMechanismDrivers: ['openvswitch','sriovnicswitch']
+  NeutronMechanismDrivers: ['sriovnicswitch', 'openvswitch']
 
   # Add PciPassthroughFilter to the scheduler default filters
   #NovaSchedulerDefaultFilters: ['RetryFilter','AvailabilityZoneFilter','RamFilter','ComputeFilter','ComputeCapabilitiesFilter','ImagePropertiesFilter','ServerGroupAntiAffinityFilter','ServerGroupAffinityFilter','PciPassthroughFilter']