diff --git a/trunk/paradiseo-moeo/src/utils/moeoBinaryMetricSavingUpdater.h b/trunk/paradiseo-moeo/src/utils/moeoBinaryMetricSavingUpdater.h
index 6f0ed6172..0d8df0759 100644
--- a/trunk/paradiseo-moeo/src/utils/moeoBinaryMetricSavingUpdater.h
+++ b/trunk/paradiseo-moeo/src/utils/moeoBinaryMetricSavingUpdater.h
@@ -65,7 +65,7 @@ class moeoBinaryMetricSavingUpdater : public eoUpdater
      * @param _filename the target filename
      */
     moeoBinaryMetricSavingUpdater (moeoVectorVsVectorBinaryMetric < ObjectiveVector, double > & _metric, const eoPop < MOEOT > & _pop, std::string _filename) :
-        metric(_metric), pop(_pop), filename(_filename), counter(1)
+        metric(_metric), pop(_pop), filename(_filename), counter(1), firstGen(true)
     {}