diff --git a/mrw/tokenizer.hpp b/mrw/tokenizer.hpp
index 6016d03..2a8bec3 100644
--- a/mrw/tokenizer.hpp
+++ b/mrw/tokenizer.hpp
@@ -9,6 +9,9 @@
     @license LGPL, see file <a href="license.html">COPYING</a>
 
     $Log$
+    Revision 1.4  2005/01/28 07:53:45  marc
+    Doc: added #include
+
     Revision 1.3  2004/12/20 13:24:26  marc
     #ifndef forgotten
 
@@ -33,6 +36,8 @@ namespace mrw {
   //@{
   /** @defgroup regexptokenizer Tokenizer
 
+      @pre #include <mrw/tokenizer.hpp>
+
       There is a Tokenizer which splits strings according to a list of
       delimiters and allows to iterate over the individual tokens: