diff --git a/src/tbf.cpp b/src/tbf.cpp
index 73b8b1c..f8e1dcb 100644
--- a/src/tbf.cpp
+++ b/src/tbf.cpp
@@ -86,7 +86,7 @@
 		tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH);
 		tbf_update_ms_class(tbf, ms_class);
 		tbf->update();
-		gprs_rlcmac_trigger_downlink_assignment(tbf, tbf, NULL);
+		tbf->bts->trigger_dl_ass(tbf, tbf, NULL);
 	} else {
 		/* the TBF exists, so we must write it in the queue
 		 * we prepend lifetime in front of PDU */
@@ -192,7 +192,7 @@
 	 * we don't use old_downlink, so the possible uplink is used
 	 * to trigger downlink assignment. if there is no uplink,
 	 * AGCH is used. */
-	gprs_rlcmac_trigger_downlink_assignment(tbf, old_tbf, imsi);
+	tbf->bts->trigger_dl_ass(tbf, old_tbf, imsi);
 
 	/* store IMSI for debugging purpose. TODO: it is more than debugging */
 	tbf_assign_imsi(tbf, imsi);