diff --git a/include/osmocom/sgsn/gb_proxy.h b/include/osmocom/sgsn/gb_proxy.h
index 96b2bcc..a36f305 100644
--- a/include/osmocom/sgsn/gb_proxy.h
+++ b/include/osmocom/sgsn/gb_proxy.h
@@ -268,7 +268,7 @@
 void gbproxy_bvc_free(struct gbproxy_bvc *bvc);
 int gbproxy_cleanup_bvcs(struct gbproxy_nse *nse, uint16_t bvci);
 
-struct gbproxy_cell *gbproxy_cell_alloc(struct gbproxy_config *cfg, uint16_t bvci);
+struct gbproxy_cell *gbproxy_cell_alloc(struct gbproxy_config *cfg, uint16_t bvci, const struct gprs_ra_id *raid, uint16_t cid);
 struct gbproxy_cell *gbproxy_cell_by_bvci(struct gbproxy_config *cfg, uint16_t bvci);
 struct gbproxy_cell *gbproxy_cell_by_cellid(struct gbproxy_config *cfg, const struct gprs_ra_id *raid, uint16_t cid);
 void gbproxy_cell_free(struct gbproxy_cell *cell);