diff -r 616a4e764dd1 -r 7a1cf16a46bd src/java/org/apache/ivy/core/IvyPatternHelper.java
--- a/src/java/org/apache/ivy/core/IvyPatternHelper.java	Fri Nov 20 11:38:53 2009 +0100
+++ b/src/java/org/apache/ivy/core/IvyPatternHelper.java	Fri Nov 20 13:58:52 2009 +0100
@@ -472,7 +472,15 @@
     }
 
     public static String getTokenRoot(String pattern) {
-        int index = pattern.indexOf('[');
+        int[] delimiters = {'[', '('};
+        for (int index = 0; index < delimiters.length; ++index) {
+            pattern = getTokenRoot(pattern, delimiters[index]);
+        }
+        return pattern;
+    }
+
+    private static String getTokenRoot(String pattern, int delimiter) {
+        int index = pattern.indexOf(delimiter);
         if (index == -1) {
             return pattern;
         } else {