diff --git a/source/administration/production-notes.txt b/source/administration/production-notes.txt
index d29f6285f9e..d927dd51a6f 100644
--- a/source/administration/production-notes.txt
+++ b/source/administration/production-notes.txt
@@ -301,7 +301,7 @@ MongoDB on Linux
 
 .. important:: The following discussion only applies to
    Linux, and therefore does not affect deployments where :program:`mongod`
-   instances run other UNIX-like systems or on Windows.
+   instances run on other UNIX-like systems or on Windows.
 
 Kernel and File Systems
 ```````````````````````
@@ -407,10 +407,29 @@ This procedure is neither exact nor exhaustive: many symbols used by
 
 .. _production-virtualization:
 
+MongoDB on Windows
+~~~~~~~~~~~~~~~~~~
+
+.. important:: The following discussion only applies to
+   Windows, and therefore does not affect deployments where :program:`mongod`
+   instances run on UNIX-like systems.
+
+MongoDB 2.6.6 and Later Using MMAPv1
+````````````````````````````````````
+
+Microsoft has released a hotfix for Windows 7 and Windows Server 2008
+R2, `KB2731284 <http://support.microsoft.com/kb/2731284>`_, that repairs a bug
+in these operating systems' use of memory-mapped files that adversely affects
+the performance of MongoDB using the MMAPv1 storage engine.
+
+Install this hotfix to obtain significant performance improvements on MongoDB
+2.6.6 and later releases in the 2.6 series, which use MMAPv1 exclusively,
+and on 2.8 and later when using MMAPv1 as the storage engine.
+
 MongoDB on Virtual Environments
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-The section describes considerations when running MongoDB in some of the
+This section describes considerations when running MongoDB in some of the
 more common virtual environments.
 
 For all platforms, consider :ref:`virtualized-disks-scheduling`.