Index: src/java/org/apache/nutch/crawl/CrawlDb.java
===================================================================
--- src/java/org/apache/nutch/crawl/CrawlDb.java	(revision 1244457)
+++ src/java/org/apache/nutch/crawl/CrawlDb.java	(working copy)
@@ -124,7 +124,6 @@
     JobConf job = new NutchJob(config);
     job.setJobName("crawldb " + crawlDb);
 
-
     Path current = new Path(crawlDb, CURRENT_NAME);
     if (FileSystem.get(job).exists(current)) {
       FileInputFormat.addInputPath(job, current);
@@ -169,7 +168,7 @@
   }
 
   public int run(String[] args) throws Exception {
-    if (args.length < 2) {
+    if (args.length < 1) {
       System.err.println("Usage: CrawlDb <crawldb> (-dir <segments> | <seg1> <seg2> ...) [-force] [-normalize] [-filter] [-noAdditions]");
       System.err.println("\tcrawldb\tCrawlDb to update");
       System.err.println("\t-dir segments\tparent directory containing all segments to update from");