diff --git a/bts/BTS_Tests_VAMOS.ttcn b/bts/BTS_Tests_VAMOS.ttcn
index 637a256..2d03411 100644
--- a/bts/BTS_Tests_VAMOS.ttcn
+++ b/bts/BTS_Tests_VAMOS.ttcn
@@ -175,7 +175,7 @@
 			pars[ch] := valueof(t_Pars(test[i][ch].chan_nr,
 						   test[i][ch].chan_mode));
 			if (test[i][ch].chan_mode.coding_alg_rate == RSL_CMOD_SP_GSM3) {
-				pars[ch].mr_conf := valueof(ts_RSL_MultirateCfg(false, 0, '00000100'B /* 5,90k */));
+				pars[ch].mr_conf := valueof(ts_RSL_MultirateCfg);
 			}
 			vc_conn[ch] := f_start_handler(handler, pars[ch], l1ctl := false);
 		}