diff --git a/src/share/classes/com/sun/javatest/diff/SuperDiff.java b/src/share/classes/com/sun/javatest/diff/SuperDiff.java
index a65d2f7..62fbfe1 100644
--- a/src/share/classes/com/sun/javatest/diff/SuperDiff.java
+++ b/src/share/classes/com/sun/javatest/diff/SuperDiff.java
@@ -212,10 +212,9 @@ class SuperDiff extends Diff {
         }
     }
 
+    @SuppressWarnings("serial")
     static class SuperTable extends TreeMap<YearDay, Map<String, File>> {
 
-        static final long serialVersionUID = 5933594140534747584L;
-
         SuperTable(File inDir, String resultPath) {
             super();
             for (File pDir : inDir.listFiles()) {