diff -r dee028db6e9b -r 73bdfa70b04e src/net/fortuna/ical4j/model/PeriodList.java
--- a/src/net/fortuna/ical4j/model/PeriodList.java	Tue Feb 10 19:25:00 2015 +0100
+++ b/src/net/fortuna/ical4j/model/PeriodList.java	Tue Feb 10 19:38:00 2015 +0100
@@ -146,7 +146,7 @@
      * where argument is not a <code>net.fortuna.ical4j.model.Period</code>.
      * @param period a period to add to the list
      * @return true if the period was added, otherwise false
-     * @see java.util.List#add(E)
+     * @see java.util.List#add(Object)
      */
     public final boolean add(final Object period) {
         if (!(period instanceof Period)) {