diff --git a/api/current.xml b/api/current.xml
index 4cd971839ab5f..6ba1199f809ac 100644
--- a/api/current.xml
+++ b/api/current.xml
@@ -99410,6 +99410,17 @@
  visibility="public"
 >
 </field>
+<field name="ECLAIR_MR1"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="6"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 </class>
 <class name="Bundle"
  extends="java.lang.Object"
diff --git a/core/java/android/os/Build.java b/core/java/android/os/Build.java
index 0f8bc083980e3..d4aaba3cf570f 100644
--- a/core/java/android/os/Build.java
+++ b/core/java/android/os/Build.java
@@ -103,16 +103,19 @@ public class Build {
          * October 2008: The original, first, version of Android.  Yay!
          */
         public static final int BASE = 1;
+        
         /**
          * February 2009: First Android update, officially called 1.1.
          */
         public static final int BASE_1_1 = 2;
+        
         /**
          * May 2009: Android 1.5.
          */
         public static final int CUPCAKE = 3;
+        
         /**
-         * Current work on "Donut" development branch.
+         * September 2009: Android 1.6.
          * 
          * <p>Applications targeting this or a later release will get these
          * new changes in behavior:</p>
@@ -133,8 +136,9 @@ public class Build {
          * </ul>
          */
         public static final int DONUT = 4;
+        
         /**
-         * Current work on "Eclair" development branch.
+         * November 2009: Android 2.0
          * 
          * <p>Applications targeting this or a later release will get these
          * new changes in behavior:</p>
@@ -152,6 +156,11 @@ public class Build {
          * </ul>
          */
         public static final int ECLAIR = 5;
+        
+        /**
+         * Current work on Eclair MR1.
+         */
+        public static final int ECLAIR_MR1 = 6;
     }
     
     /** The type of build, like "user" or "eng". */