diff --git a/cs654/proj1/KaZaGUI.java b/cs654/proj1/KaZaGUI.java
index 8f9f7cf..da5d353 100644
--- a/cs654/proj1/KaZaGUI.java
+++ b/cs654/proj1/KaZaGUI.java
@@ -163,8 +163,10 @@ public class KaZaGUI extends JFrame
                 synchronized (m_activeDownloads)
                 {
                     Set<Integer> indices = m_activeDownloads.keySet();
-                    for (Integer i : indices)
+                    Object[] arr = indices.toArray();
+                    for (Object o : arr)
                     {
+                        Integer i = (Integer) o;
                         if (!m_client.isDownloadActive(i))
                         {
                             KaZaClient.SearchResult sr = m_activeDownloads.get(i);