Index: luni/src/main/java/java/util/Properties.java =================================================================== --- luni/src/main/java/java/util/Properties.java (revision 478105) +++ luni/src/main/java/java/util/Properties.java (working copy) @@ -462,7 +462,7 @@ * the value * @return the old value mapped to the key, or null */ - public synchronized Object setProperty(String name, String value) { + public Object setProperty(String name, String value) { return put(name, value); }