diff -r c5720b98ab4e -r 2d4597793958 rt/emul/mini/src/main/java/java/lang/Boolean.java
--- a/rt/emul/mini/src/main/java/java/lang/Boolean.java	Mon May 26 14:33:42 2014 +0200
+++ b/rt/emul/mini/src/main/java/java/lang/Boolean.java	Sun Apr 17 13:13:39 2016 +0200
@@ -213,12 +213,9 @@
      * @return  {@code true} if the Boolean objects represent the
      *          same value; {@code false} otherwise.
      */
-    public boolean equals(Object obj) {
-        if (obj instanceof Boolean) {
-            return value == ((Boolean)obj).booleanValue();
-        }
-        return false;
-    }
+    @JavaScriptBody(args = { "obj" }, body = "return obj && this.valueOf() === obj.valueOf();")
+    @Override
+    public native boolean equals(Object obj);
 
     /**
      * Returns {@code true} if and only if the system property