--- ./modules/comment.module	2004/03/16 02:36:21	1.14
+++ ./modules/comment.module	2004/03/17 18:25:52
@@ -1752,7 +1756,9 @@
 
 function comment_cron() {
   $earliest = db_result(db_query('SELECT MIN(c.cid) FROM {comments} c WHERE c.timestamp > %d', NODE_NEW_LIMIT));
-  db_query('DELETE FROM {comments_history} WHERE max_cid < %d', $earliest);
+  if ($earliest) {
+    db_query('DELETE FROM {comments_history} WHERE max_cid < %d', $earliest);
+  }
 
   $rows = db_query("SELECT * FROM {comments_history} ORDER BY uid, min_cid");