diff --git a/libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_stack_out.c b/libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_stack_out.c
index 1591fb2a0e..9b4b7872c4 100644
--- a/libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_stack_out.c
+++ b/libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_stack_out.c
@@ -39,7 +39,7 @@ void sngisdn_snd_setup(ftdm_channel_t *ftdmchan)
 	ConEvnt conEvnt;	
 	sngisdn_chan_data_t *sngisdn_info = ftdmchan->call_data;
 	sngisdn_span_data_t *signal_data = (sngisdn_span_data_t*) ftdmchan->span->signal_data;
-	ftdm_sngisdn_progind_t prog_ind = {SNGISDN_PROGIND_LOC_USER, SNGISDN_PROGIND_DESCR_ORIG_NISDN};
+	ftdm_sngisdn_progind_t prog_ind = {SNGISDN_PROGIND_LOC_USER, SNGISDN_PROGIND_DESCR_INVALID};
 
 	ftdm_assert((!sngisdn_info->suInstId && !sngisdn_info->spInstId), "Trying to call out, but call data was not cleared\n");