diff --git a/include/osmocom/bsc/gsm_data.h b/include/osmocom/bsc/gsm_data.h
index 5336ebe..43d7040 100644
--- a/include/osmocom/bsc/gsm_data.h
+++ b/include/osmocom/bsc/gsm_data.h
@@ -571,6 +571,7 @@
 		 * flag, so that the lchan will gracefully release at the next sensible junction. */
 		bool requested;
 		bool do_rr_release;
+		enum gsm48_rr_cause rr_cause;
 
 		/* There is an RSL error cause of value 0, so we need a separate flag. */
 		bool in_error;
@@ -1896,4 +1897,6 @@
 
 bool trx_has_valid_pchan_config(const struct gsm_bts_trx *trx);
 
+enum gsm48_rr_cause bsc_gsm48_rr_cause_from_gsm0808_cause(enum gsm0808_cause c);
+
 #endif /* _GSM_DATA_H */