diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index 64471dc7a1..72b6b0717b 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -164,6 +164,9 @@ Branch-2 ( Unreleased changes )
     MAPREDUCE-4494. TestFifoScheduler failing with Metrics source QueueMetrics,q0=default 
     already exists!. (ahmed.radwan via tucu)
 
+    MAPREDUCE-4484. Incorrect IS_MINI_YARN_CLUSTER property name in YarnConfiguration. 
+    (ahmed.radwan via tucu)
+
 Release 2.1.0-alpha - Unreleased 
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java b/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
index 30b9f4e5e5..c68fde287d 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
+++ b/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
@@ -563,7 +563,8 @@ public class YarnConfiguration extends Configuration {
   /** Container temp directory */
   public static final String DEFAULT_CONTAINER_TEMP_DIR = "./tmp";
 
-  public static final String IS_MINI_YARN_CLUSTER = YARN_PREFIX + ".is.minicluster";
+  public static final String IS_MINI_YARN_CLUSTER = YARN_PREFIX
+      + "is.minicluster";
 
   /** Whether to use fixed ports with the minicluster. */
   public static final String YARN_MINICLUSTER_FIXED_PORTS = YARN_PREFIX