diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index 53ba8ff..db3eaff 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -683,4 +683,6 @@
 
 struct gsm_meas_rep *lchan_next_meas_rep(struct gsm_lchan *lchan);
 
+int gsm_bts_model_register(struct gsm_bts_model *model);
+
 #endif