diff --git a/qudarap/QEvt.cc b/qudarap/QEvt.cc
index c1cec5937..51ec0b8a0 100644
--- a/qudarap/QEvt.cc
+++ b/qudarap/QEvt.cc
@@ -1360,7 +1360,9 @@ NP* QEvt::gatherComponent_(unsigned cmp) const
     switch(cmp)
     {
         //case SCOMP_GENSTEP:     a = getGenstep()     ; break ;
+#ifndef PRODUCTION
         case SCOMP_GENSTEP:       a = gatherGenstepFromDevice() ; break ;
+#endif
         case SCOMP_INPHOTON:      a = getInputPhoton()          ; break ;
         case SCOMP_PHOTON:        a = gatherPhoton()            ; break ;
         case SCOMP_PHOTONLITE:    a = gatherPhotonLite()        ; break ;