diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index d92b9c6..3602746 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -7350,7 +7350,7 @@
 }
 
 /* establish one Radio Link Layer via SABM -> UA. Use l3 for contention resolution */
-private function f_est_rll_mo(uint3_t sapi, RslLinkId link_id, octetstring l3) runs on ConnHdlr {
+friend function f_est_rll_mo(uint3_t sapi, RslLinkId link_id, octetstring l3) runs on ConnHdlr {
 	timer T := 2.0;
 	/* send SABM from MS -> BTS */
 	f_tx_lapdm(ts_LAPDm_SABM(sapi, cr_MO_CMD, true, l3), link_id);