diff --git a/roofit/roofitcore/inc/RooMinimizer.h b/roofit/roofitcore/inc/RooMinimizer.h
index db20a9f936cc1..01c377fadeb06 100644
--- a/roofit/roofitcore/inc/RooMinimizer.h
+++ b/roofit/roofitcore/inc/RooMinimizer.h
@@ -129,7 +129,7 @@ class RooMinimizer : public TObject {
 
   RooMinimizer(const RooMinimizer&) ;
 	
-  ClassDef(RooMinimizer,1) // RooFit interface to ROOT::Fit::Fitter
+  ClassDef(RooMinimizer,0) // RooFit interface to ROOT::Fit::Fitter
 } ;