diff --git a/lemon/error.h b/lemon/error.h
--- a/lemon/error.h
+++ b/lemon/error.h
@@ -102,8 +102,6 @@
   protected:
     ///\e
 
-    ///\todo The good solution is boost::shared_ptr...
-    ///
     mutable std::auto_ptr<std::ostringstream> buf;
 
     ///\e