diff --git a/manifests/agents/dhcp.pp b/manifests/agents/dhcp.pp
index 17f306fb4..961d4cf9c 100644
--- a/manifests/agents/dhcp.pp
+++ b/manifests/agents/dhcp.pp
@@ -28,7 +28,8 @@
 #   Defaults to $::os_service_default.
 #
 # [*interface_driver*]
-#   (optional) Defaults to 'neutron.agent.linux.interface.OVSInterfaceDriver'.
+#   (optional) The driver used to manage the virtual interface.
+#   Defaults to 'neutron.agent.linux.interface.OVSInterfaceDriver'.
 #
 # [*dhcp_driver*]
 #   (optional) Defaults to $::os_service_default.
diff --git a/manifests/agents/l3.pp b/manifests/agents/l3.pp
index 63a37c0a8..1cd6ccbcd 100644
--- a/manifests/agents/l3.pp
+++ b/manifests/agents/l3.pp
@@ -23,8 +23,8 @@
 #   Defaults to $::os_service_default
 #
 # [*interface_driver*]
-#   (optional) Driver to interface with neutron
-#   Defaults to OVSInterfaceDriver
+#   (optional) The driver used to manage the virtual interface.
+#   Defaults to 'neutron.agent.linux.interface.OVSInterfaceDriver'.
 #
 # [*handle_internal_only_routers*]
 #   (optional) L3 Agent will handle non-external routers
diff --git a/manifests/agents/metering.pp b/manifests/agents/metering.pp
index 843e30b7d..3ff7b8269 100644
--- a/manifests/agents/metering.pp
+++ b/manifests/agents/metering.pp
@@ -35,10 +35,12 @@
 #   (optional) Show debugging output in log. Defaults to $::os_service_default.
 #
 # [*interface_driver*]
-#   (optional) Defaults to 'neutron.agent.linux.interface.OVSInterfaceDriver'.
+#   (optional) The driver used to manage the virtual interface.
+#   Defaults to 'neutron.agent.linux.interface.OVSInterfaceDriver'.
 #
 # [*driver*]
-#   (optional) Defaults to 'neutron.services.metering.drivers.noop.noop_driver.NoopMeteringDriver'.
+#   (optional) Metering driver.
+#   Defaults to 'neutron.services.metering.drivers.noop.noop_driver.NoopMeteringDriver'.
 #
 # [*measure_interval*]
 #   (optional) Interval between two metering measures.
diff --git a/manifests/agents/ml2/mlnx.pp b/manifests/agents/ml2/mlnx.pp
index 5d654ce41..479133cb2 100644
--- a/manifests/agents/ml2/mlnx.pp
+++ b/manifests/agents/ml2/mlnx.pp
@@ -38,7 +38,7 @@
 #   Defaults to $::os_service_default
 #
 # [*interface_driver*]
-#   (optional) Driver to interface with neutron
+#   (optional) The driver used to manage the virtual interface.
 #   Defaults to $::os_service_default
 #
 # [*multi_interface_driver_mappings*]
diff --git a/manifests/agents/vpnaas.pp b/manifests/agents/vpnaas.pp
index b6d58fac4..414e0459f 100644
--- a/manifests/agents/vpnaas.pp
+++ b/manifests/agents/vpnaas.pp
@@ -28,7 +28,8 @@
 #   (optional) Defaults to 'neutron.services.vpn.device_drivers.ipsec.OpenSwanDriver'.
 #
 # [*interface_driver*]
-#  (optional) Defaults to 'neutron.agent.linux.interface.OVSInterfaceDriver'.
+#   (optional) The driver used to manage the virtual interface.
+#   Defaults to 'neutron.agent.linux.interface.OVSInterfaceDriver'.
 #
 # [*ipsec_status_check_interval*]
 #   (optional) Status check interval. Defaults to $::os_service_default.