diff --git a/doc/high-availability-guide/ap-glance-api.txt b/doc/high-availability-guide/ap-glance-api.txt
index c1240bd71e..45b46106f5 100644
--- a/doc/high-availability-guide/ap-glance-api.txt
+++ b/doc/high-availability-guide/ap-glance-api.txt
@@ -1,7 +1,7 @@
 [[s-glance-api]]
 ==== Highly available OpenStack Image API
 
-OpenStack Image is the Image Delivery and Registring Service in OpenStack.
+OpenStack Image Service offers a service for discovering, registering, and retrieving virtual machine images.
 Making the OpenStack Image API service highly available in active / passive mode involves
 
 * configuring OpenStack Image to listen on the VIP address,
@@ -78,7 +78,7 @@ glance_api_servers = 192.168.42.103
 
 You need also to create the OpenStack Image API Endpoint with this IP.
 
-NOTE : If you are using both private and public IP, you should create two Virtual IP and define your endpoint like this :
+NOTE : If you are using both private and public IP addresses, you should create two Virtual IP addresses and define your endpoint like this:
 ----
 keystone endpoint-create --region $KEYSTONE_REGION --service-id $service-id --publicurl 'http://PUBLIC_VIP:9292' --adminurl 'http://192.168.42.103:9292' --internalurl 'http://192.168.42.103:9292'
 ----