diff --git a/source/branches/CLASSV3/src/IsotopicVector.cxx b/source/branches/CLASSV3/src/IsotopicVector.cxx
index ab186260a398b93f80856ca86daf02dab449e8fd..fb8212b12e4b3a20b172272e1bce1e7c732b24fb 100755
--- a/source/branches/CLASSV3/src/IsotopicVector.cxx
+++ b/source/branches/CLASSV3/src/IsotopicVector.cxx
@@ -278,8 +278,6 @@ bool IsotopicVector::operator<(const IsotopicVector& isotopicvector) const
 //________________________________________________________________________
 IsotopicVector::IsotopicVector()
 {
-	fIsotopicQuantity = map<ZAI,double>();
-	fIsotopicQuantityNeeded = map<ZAI,double>();
 }