diff --git a/eo/src/utils/eoUpdater.h b/eo/src/utils/eoUpdater.h
index f8597c14..23374475 100644
--- a/eo/src/utils/eoUpdater.h
+++ b/eo/src/utils/eoUpdater.h
@@ -32,6 +32,8 @@
 #include <utils/eoState.h>
 #include <utils/eoParam.h>
 
+template <class EOT> class eoCheckPoint;
+
 /**
     eoUpdater is a generic procudere for updating whatever you want.
     Yet again an empty name
@@ -41,6 +43,9 @@ class eoUpdater : public eoF<void>
 public:
   virtual void lastCall() {}
   virtual std::string className(void) const { return "eoUpdater"; }
+   
+   template <class EOT> 
+    eoUpdater& addTo(eoCheckPoint<EOT>& cp)        { cp.add(*this);  return *this; }
 };
 
 /**