diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index dacb630..84d0c38 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -46,6 +46,7 @@
 
 /* make sure to sync this with the osmo-bts.cfg you're using */
 const integer NUM_TCHF_PER_BTS := 5;
+const integer NUM_SDCCH_PER_BTS := 4;
 
 
 /* per-BTS state which we keep */
@@ -386,13 +387,14 @@
 	chreq_nochan := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:no_channel");
 
 	/* expect 5xTCH/F to succeed */
-	for (i := 0; i < NUM_TCHF_PER_BTS; i := i+1) {
+	for (i := 0; i < NUM_TCHF_PER_BTS + NUM_SDCCH_PER_BTS; i := i+1) {
 		f_chreq_act_ack('23'O, i);
 	}
 
 	IPA_RSL[0].clear;
 
-	f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total", chreq_total+NUM_TCHF_PER_BTS);
+	f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total",
+				   chreq_total+NUM_TCHF_PER_BTS+NUM_SDCCH_PER_BTS);
 
 	/* now expect additional channel activations to fail */
 	f_ipa_tx(0, ts_RSL_CHAN_RQD('42'O, 42));
@@ -408,7 +410,7 @@
 		rr := dec_GsmRrMessage(rsl_ud.rsl.ies[1].body.full_imm_ass_info.payload);
 		if (rr.header.message_type == IMMEDIATE_ASSIGNMENT_REJECT) {
 			f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total",
-						   chreq_total+NUM_TCHF_PER_BTS+1);
+						   chreq_total+NUM_TCHF_PER_BTS+NUM_SDCCH_PER_BTS+1);
 			f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:no_channel",
 						   chreq_nochan+1);
 			setverdict(pass);