diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index fa4e426..fddfcca 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -8765,7 +8765,8 @@
 	};
 
 	pars := valueof(t_Pars(t_RslChanNr_Bm(0), ts_RSL_ChanMode_SIGN,
-			       spec := { top := top }, trx_nr := 1));
+			       spec := { top := top }, trx_nr := 1,
+			       t_guard := 30.0));
 	vc_conn := f_start_handler(refers(f_TC_acch_overpower), pars);
 	vc_conn.done;