Only in tvheadend: config.default
diff -crB '--exclude=.git' tvheadend_orig/src/dvb/dvb_preconf.c tvheadend/src/dvb/dvb_preconf.c
*** tvheadend_orig/src/dvb/dvb_preconf.c	Sun Jun 10 13:07:29 2012
--- tvheadend/src/dvb/dvb_preconf.c	Sun Jun 10 13:11:10 2012
***************
*** 64,70 ****
        break;
        
      case FE_QPSK:
!       dmc.dmc_fe_delsys                    = SYS_DVBS;
        dmc.dmc_fe_params.u.qpsk.symbol_rate = m->symrate;
        dmc.dmc_fe_params.u.qpsk.fec_inner   = m->fec;
  
--- 64,72 ----
        break;
        
      case FE_QPSK:
!       #ifdef SYS_DVBS
!       	dmc.dmc_fe_delsys                  = SYS_DVBS;
!       #endif
        dmc.dmc_fe_params.u.qpsk.symbol_rate = m->symrate;
        dmc.dmc_fe_params.u.qpsk.fec_inner   = m->fec;