diff --git a/docker/neutron/neutron-agents/config-scripts/config-dhcp-agent.sh b/docker/neutron/neutron-agents/config-scripts/config-dhcp-agent.sh
index 6149fc09ed..415644aa6e 100755
--- a/docker/neutron/neutron-agents/config-scripts/config-dhcp-agent.sh
+++ b/docker/neutron/neutron-agents/config-scripts/config-dhcp-agent.sh
@@ -18,7 +18,7 @@ check_required_vars VERBOSE_LOGGING DEBUG_LOGGING MECHANISM_DRIVERS \
 cfg=/etc/neutron/dhcp_agent.ini
 neutron_conf=/etc/neutron/neutron.conf
 
-if [[ ${MECHANISM_DRIVERS} =~ .*linuxbridge.* ]]; then
+if [[ ${MECHANISM_DRIVERS} =~ linuxbridge ]]; then
   interface_driver="neutron.agent.linux.interface.BridgeInterfaceDriver"
 elif [[ ${MECHANISM_DRIVERS} == "openvswitch" ]]; then
   interface_driver="neutron.agent.linux.interface.OVSInterfaceDriver"
diff --git a/docker/neutron/neutron-agents/config-scripts/config-l3-agent.sh b/docker/neutron/neutron-agents/config-scripts/config-l3-agent.sh
index e735e4abeb..5f88869d21 100755
--- a/docker/neutron/neutron-agents/config-scripts/config-l3-agent.sh
+++ b/docker/neutron/neutron-agents/config-scripts/config-l3-agent.sh
@@ -27,7 +27,7 @@ crudini --set $cfg \
         DEFAULT \
         debug \
         "${DEBUG_LOGGING}"
-if [[ "${MECHANISM_DRIVERS}" =~ .*linuxbridge* ]] ; then
+if [[ "${MECHANISM_DRIVERS}" =~ linuxbridge ]] ; then
   crudini --set $cfg \
           DEFAULT \
           interface_driver \
diff --git a/docker/neutron/neutron-agents/config-scripts/config-linuxbridge-agent.sh b/docker/neutron/neutron-agents/config-scripts/config-linuxbridge-agent.sh
index 27a25cd61e..568888d2c8 100755
--- a/docker/neutron/neutron-agents/config-scripts/config-linuxbridge-agent.sh
+++ b/docker/neutron/neutron-agents/config-scripts/config-linuxbridge-agent.sh
@@ -14,7 +14,7 @@ check_required_vars PUBLIC_IP NEUTRON_FLAT_NETWORK_NAME \
 cfg=/etc/neutron/plugins/ml2/ml2_conf.ini
 
 # Configure ml2_conf.ini
-if [[ ${TYPE_DRIVERS} =~ .*vxlan.* ]]; then
+if [[ ${TYPE_DRIVERS} =~ vxlan ]]; then
   crudini --set $cfg \
           vxlan \
           local_ip \
diff --git a/docker/neutron/neutron-base/config-neutron.sh b/docker/neutron/neutron-base/config-neutron.sh
index 18f5ffc968..35ce787a40 100644
--- a/docker/neutron/neutron-base/config-neutron.sh
+++ b/docker/neutron/neutron-base/config-neutron.sh
@@ -191,7 +191,7 @@ crudini --set $ml2_cfg \
         enable_ipset \
         "True"
 
-if [[ ${MECHANISM_DRIVERS} =~ .*linuxbridge.* ]]; then
+if [[ ${MECHANISM_DRIVERS} =~ linuxbridge ]]; then
   firewall_driver="neutron.agent.linux.iptables_firewall.IptablesFirewallDriver"
 elif [[ ${MECHANISM_DRIVERS} == "openvswitch" ]]; then
   firewall_driver="neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver"
diff --git a/docker/neutron/neutron-server/start.sh b/docker/neutron/neutron-server/start.sh
index 23ff63a87e..d073289377 100755
--- a/docker/neutron/neutron-server/start.sh
+++ b/docker/neutron/neutron-server/start.sh
@@ -86,7 +86,7 @@ crudini --set $core_cfg \
         nova_admin_password \
         "${NOVA_KEYSTONE_PASSWORD}"
 
-if [[ ${MECHANISM_DRIVERS} =~ .*linuxbridge.* ]]; then
+if [[ ${MECHANISM_DRIVERS} =~ linuxbridge ]]; then
   crudini --set $ml2_cfg \
           linux_bridge \
           physical_interface_mappings \
diff --git a/docker/nova-base/config-nova.sh b/docker/nova-base/config-nova.sh
index 2912d0b588..00365f1ade 100755
--- a/docker/nova-base/config-nova.sh
+++ b/docker/nova-base/config-nova.sh
@@ -90,9 +90,9 @@ elif [ "${NETWORK_MANAGER}" == "neutron" ] ; then
   crudini --set $cfg DEFAULT neutron_default_tenant_id default
   crudini --set $cfg DEFAULT network_api_class nova.network.neutronv2.api.API
   crudini --set $cfg DEFAULT security_group_api neutron
-  if [[ "${MECHANISM_DRIVERS}" =~ .*linuxbridge* ]] ; then
+  if [[ "${MECHANISM_DRIVERS}" =~ linuxbridge ]] ; then
     crudini --set $cfg DEFAULT linuxnet_interface_driver nova.network.linux_net.NeutronLinuxBridgeInterfaceDriver
-  elif [[ "${MECHANISM_DRIVERS}" =~ .*openvswitch* ]] ; then
+  elif [[ "${MECHANISM_DRIVERS}" =~ openvswitch ]] ; then
     crudini --set $cfg DEFAULT linuxnet_interface_driver nova.network.linux_net.LinuxOVSInterfaceDriver
   fi
   crudini --set $cfg DEFAULT libvirt_vif_driver nova.virt.libvirt.vif.LibvirtGenericVIFDriver