diff --git a/source/trunk/src/DataBank.cxx b/source/trunk/src/DataBank.cxx
index 61009214f6b8e905d4ee2761464eb4914979c4dc..4dbca25cb74b5545af99e42760d4433cb29c65ea 100755
--- a/source/trunk/src/DataBank.cxx
+++ b/source/trunk/src/DataBank.cxx
@@ -1921,6 +1921,9 @@ EvolutionData DataBank<IsotopicVector>::GenerateEvolutionData(IsotopicVector iso
 	CaptureXSMatrix.clear();
 	n2nXSMatrix.clear();
 
+	if(fEvolutionDataInterpolation)
+		EvolutionDataStep.DeleteEvolutionData();
+
 	return GeneratedDB;
 
 }