--- rxvt-unicode/src/rsinc.h	2008/11/04 11:03:29	1.27
+++ rxvt-unicode/src/rsinc.h	2009/05/30 08:51:23	1.28
@@ -75,6 +75,7 @@
   def (int_bwidth)
   def (borderLess)
   def (lineSpace)
+  def (letterSpace)
   def (cursorUnderline)
   def (urgentOnBell)
 #endif