diff --git a/include/openbsc/paging.h b/include/openbsc/paging.h
index 1260a9b..0e5a0d4 100644
--- a/include/openbsc/paging.h
+++ b/include/openbsc/paging.h
@@ -38,4 +38,7 @@
 /* stop paging requests */
 void paging_request_stop(struct gsm_bts *bts, struct gsm_subscriber *subscr);
 
+/* update paging load */
+void paging_update_buffer_space(struct gsm_bts *bts, u_int16_t);
+
 #endif