diff --git a/devices/surface-hub/manage-windows-updates-for-surface-hub.md b/devices/surface-hub/manage-windows-updates-for-surface-hub.md
index c769840d86..a01bbdbab3 100644
--- a/devices/surface-hub/manage-windows-updates-for-surface-hub.md
+++ b/devices/surface-hub/manage-windows-updates-for-surface-hub.md
@@ -44,7 +44,7 @@ Microsoft publishes two types of Surface Hub releases broadly on an ongoing basi
 
 In order to improve release quality and simplify deployments, all new releases that Microsoft publishes for Windows 10, including Surface Hub, will be cumulative. This means new feature updates and quality updates will contain the payloads of all previous releases (in an optimized form to reduce storage and networking requirements), and installing the release on a device will bring it completely up to date. Also, unlike earlier versions of Windows, you cannot install a subset of the contents of a Windows 10 quality update. For example, if a quality update contains fixes for three security vulnerabilities and one reliability issue, deploying the update will result in the installation of all four fixes.
 
-The Surface Hub operating system receives updates on the [Semi-Annual Channel](https://docs.microsoft.com/windows/deployment/update/waas-overview#naming-changes). Like other editions of Windows 10, the servicing lifetime ois finite. You must install new feature updates on machines running these branches in order to continue receiving quality updates.
+The Surface Hub operating system receives updates on the [Semi-Annual Channel](https://docs.microsoft.com/windows/deployment/update/waas-overview#naming-changes). Like other editions of Windows 10, the servicing lifetime is finite. You must install new feature updates on machines running these branches in order to continue receiving quality updates.
 
 For more information on Windows as a Service, see [Overview of Windows as a service](https://technet.microsoft.com/itpro/windows/manage/waas-overview).