diff --git a/doc/install-guide/section_neutron-concepts.xml b/doc/install-guide/section_neutron-concepts.xml
index 0c2acbd342..a5e00cd2ac 100644
--- a/doc/install-guide/section_neutron-concepts.xml
+++ b/doc/install-guide/section_neutron-concepts.xml
@@ -34,7 +34,7 @@
     other subnets that are connected to the same router, and machines
     can access the outside network through the gateway for the
     router.</para>
-  <para>Additionally, you can allocate IP addresses on an external
+  <para>Additionally, you can allocate IP addresses on external
     networks to ports on the internal network. Whenever something is
     connected to a subnet, that connection is called a port. You can
     associate external network IP addresses with ports to VMs. This
@@ -96,7 +96,7 @@
       Special NICs, switches, and routers know how to interpret the
       VLAN tags, as does Open vSwitch. Packets tagged for one VLAN are
       only shared with other devices configured to be on that VLAN,
-      even through all devices are on the same physical
+      even though all devices are on the same physical
       network.</para>
     <para>The most common security group driver used with Open vSwitch
       is the Hybrid IPTables/Open vSwitch plug-in. It uses a