diff --git a/src/classes/PFitterFcnDKS.cpp b/src/classes/PFitterFcnDKS.cpp
index a640ff81..5fd17cd4 100644
--- a/src/classes/PFitterFcnDKS.cpp
+++ b/src/classes/PFitterFcnDKS.cpp
@@ -66,7 +66,7 @@ PFitterFcnDKS::PFitterFcnDKS(PRunListCollection *runList, const Bool_t useChi2,
  */
 PFitterFcnDKS::~PFitterFcnDKS()
 {
-
+  FreeDKS();
 }
 
 //--------------------------------------------------------------------------