diff -r f99a92839285 -r 2dcc8f2e1a1b emul/src/main/java/java/lang/StringBuffer.java
--- a/emul/src/main/java/java/lang/StringBuffer.java	Sat Sep 29 10:47:42 2012 +0200
+++ b/emul/src/main/java/java/lang/StringBuffer.java	Thu Jan 03 11:11:30 2013 +0100
@@ -527,8 +527,7 @@
      * @since      1.4
      */
     public synchronized int indexOf(String str, int fromIndex) {
-        return String.indexOf(value, 0, count,
-                              str.toCharArray(), 0, str.length(), fromIndex);
+        return super.indexOf(str, fromIndex);
     }
 
     /**