diff --git a/classpath/java/util/Collection.java b/classpath/java/util/Collection.java
index cfde456aab..c2d68500c7 100644
--- a/classpath/java/util/Collection.java
+++ b/classpath/java/util/Collection.java
@@ -15,7 +15,7 @@ public interface Collection<T> extends Iterable<T> {
 
   public boolean isEmpty();
 
-  public boolean contains(T element);
+  public boolean contains(Object element);
 
   public boolean add(T element);