diff --git a/eo/src/eo1d.h b/eo/src/eo1d.h
index 31ed415f..f2bfea20 100644
--- a/eo/src/eo1d.h
+++ b/eo/src/eo1d.h
@@ -73,7 +73,7 @@ public:
      have to implement this.
      @param _is the input stream
  */ 
-  eo1d( istream& _is): EO<fitnessT>( _is ){};
+  eo1d( istream& _is): EO<fitnessT>(){ readFrom(is); }
 
   /// Copy ctor
   eo1d( const eo1d& _eo )