Index: src/main/java/org/displaytag/model/HeaderCell.java
===================================================================
--- src/main/java/org/displaytag/model/HeaderCell.java	(revision 1133)
+++ src/main/java/org/displaytag/model/HeaderCell.java	(working copy)
@@ -113,9 +113,9 @@
     private int maxWords;
 
     /**
-     * group the column?
+     * group the column? No grouping by default.
      */
-    private int group;
+    private int group = -1;
 
     /**
      * Name of the non-decorated property used during sorting.