diff --git a/tutorials/roofit/rf513_wsfactory_tools.C b/tutorials/roofit/rf513_wsfactory_tools.C
index b194de0f3f9b5e48eb6f3948c36941ee2b5d4a3b..d8c0ff736551113ecae29e104a4a9b0943da7a37 100644
--- a/tutorials/roofit/rf513_wsfactory_tools.C
+++ b/tutorials/roofit/rf513_wsfactory_tools.C
@@ -41,11 +41,11 @@ void rf513_wsfactory_tools()
                                                      	   "GaussModel(dt,0,sigmaT[3,10]),"
                                                            "GaussModel(dt,0,20)},{fracC[0,1],fracT[0,1]}),"
                                              "DoubleSided ),"
-                           "Gaussian::sig_m( mes[5.20,5.30], mB0[5.20,5.30], sigmB0[0.01,0.05] )") ;
+                           "Gaussian::sig_m( mes[5.20,5.30], mB0[5.20,5.30], sigmB0[0.01,0.05] ))") ;
   
   // Make background component: A plain decay function in t times an Argus function in the reconstructed mass
   w->factory("PROD::bkg(  Decay::bkg_t( dt, tau, gm, DoubleSided),"
-                         "ArgusBG::bkg_m( mes, 5.291, k[-100,-10])") ;
+                         "ArgusBG::bkg_m( mes, 5.291, k[-100,-10]))") ;
 
   // Make composite model from the signal and background component
   w->factory("SUM::model( Nsig[5000,0,10000]*sig, NBkg[500,0,10000]*bkg )") ;