diff --git a/EGkUserObj.h b/EGkUserObj.h
index ee0866c..fdbf061 100644
--- a/EGkUserObj.h
+++ b/EGkUserObj.h
@@ -32,7 +32,7 @@ class __declspec( novtable) IUserObj
    public :                 // save & load
       virtual bool ToSave( void) const { return false ; }
       virtual bool Save( STRVECTOR& vString) const { return false ; }
-      virtual bool Load( const STRVECTOR& vString) { return false ; }
+      virtual bool Load( const STRVECTOR& vString, int nBaseGdbId) { return false ; }
    public :                 // show & transform geometry (only if with a GeoObj)
       virtual bool GetDrawPolyLines( POLYLINELIST& lstPL) const { return false ; }
       virtual bool Translate( const Vector3d& vtMove) { return true ; }