diff --git a/src/java/com/samskivert/util/ArrayIntSet.java b/src/java/com/samskivert/util/ArrayIntSet.java
index b047c85b..15565293 100644
--- a/src/java/com/samskivert/util/ArrayIntSet.java
+++ b/src/java/com/samskivert/util/ArrayIntSet.java
@@ -387,7 +387,7 @@ public class ArrayIntSet extends AbstractSet
     {
         try {
             ArrayIntSet nset = (ArrayIntSet)super.clone();
-            nset._values = _values.clone();
+            nset._values = (int[]) _values.clone();
             return nset;
 
         } catch (CloneNotSupportedException cnse) {