diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index c13704dca1a..1064a2332a3 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -276,6 +276,8 @@ Release 2.0.5-beta - UNRELEASED
     YARN-576. Modified ResourceManager to reject NodeManagers that don't satisy
     minimum resource requirements. (Kenji Kikushima via vinodkv)
 
+    YARN-646. Fix two typos in Fair Scheduler user guide. (Dapeng Sun via atm)
+
 Release 2.0.4-alpha - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/FairScheduler.apt.vm b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/FairScheduler.apt.vm
index c7a8229d36f..3d6af1347ec 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/FairScheduler.apt.vm
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/FairScheduler.apt.vm
@@ -124,7 +124,7 @@ Hadoop MapReduce Next Generation - Fair Scheduler
 
     * The smallest container size the scheduler can allocate, in MB of memory.
 
- * <<<yarn.scheduler.fair.minimum-allocation-mb>>>
+ * <<<yarn.scheduler.fair.maximum-allocation-mb>>>
 
     * The largest container the scheduler can allocate, in MB of memory.
 
@@ -177,7 +177,7 @@ Hadoop MapReduce Next Generation - Fair Scheduler
 
 Allocation file format
 
-  The allocation file must be in XML format. The format contains three types of
+  The allocation file must be in XML format. The format contains four types of
   elements:
 
  * <<Queue elements>>, which represent queues. Each may contain the following