diff --git a/module001-ch011-block-storage.xml b/module001-ch011-block-storage.xml
index 0bad6eea..8c2c6527 100644
--- a/module001-ch011-block-storage.xml
+++ b/module001-ch011-block-storage.xml
@@ -52,7 +52,7 @@
     resulting instance may still have ephemeral storage depending on
     the flavor selected, but the root filesystem (and possibly others)
     will be on the persistent volume and thus state will be maintained
-    even if the instance it shutdown. Details of this configuration
+    even if the instance is shutdown. Details of this configuration
     are discussed in the<link
       xlink:href="http://docs.openstack.org/user-guide/content/"
       >OpenStack End User Guide</link>.</para>