diff --git a/src/gsm_rlcmac.h b/src/gsm_rlcmac.h
index 49c596d..8f4039c 100644
--- a/src/gsm_rlcmac.h
+++ b/src/gsm_rlcmac.h
@@ -5136,4 +5136,5 @@
  void encode_gsm_rlcmac_uplink(bitvec * vector, RlcMacUplink_t * data);
  void decode_gsm_rlcmac_uplink_data(bitvec * vector, RlcMacUplinkDataBlock_t * data);
  void encode_gsm_rlcmac_downlink_data(bitvec * vector, RlcMacDownlinkDataBlock_t * data);
+ void decode_gsm_ra_cap(bitvec * vector, MS_Radio_Access_capability_t * data);
 #endif /* __PACKET_GSM_RLCMAC_H__ */