diff --git a/library/LAPDm_RAW_PT.ttcn b/library/LAPDm_RAW_PT.ttcn
index bdfc50b..6b8f9fb 100644
--- a/library/LAPDm_RAW_PT.ttcn
+++ b/library/LAPDm_RAW_PT.ttcn
@@ -320,7 +320,7 @@
 			var TBF_UL_establish_res res;
 			if (isvalue(g_tbf_ul[tbf_nr].arfcn)) {
 				setverdict(fail, "Cannot establish UL TBF ID ", tbf_nr, ": BUSY");
-				self.stop;
+				mtc.stop;
 			}
 			f_establish_tbf(tbf_ul_req.ra);
 			if (ph_state == PH_STATE_TBF) {
@@ -340,7 +340,7 @@
 			var TbfNr tbf_nr := tbf_dl_req.tbf_nr;
 			if (isvalue(g_tbf_dl[tbf_nr].arfcn)) {
 				setverdict(fail, "Cannot establish DL TBF ID ", tbf_nr, ": BUSY");
-				self.stop;
+				mtc.stop;
 			}
 			g_tbf_dl[tbf_nr] := tbf_dl_req.pars;
 			f_L1CTL_TBF_CFG(L1CTL, false, tbf_dl_req.pars.tfi);