diff --git a/include/openbsc/select.h b/include/openbsc/select.h
index b677162..c2af1d7 100644
--- a/include/openbsc/select.h
+++ b/include/openbsc/select.h
@@ -18,5 +18,5 @@
 
 int bsc_register_fd(struct bsc_fd *fd);
 void bsc_unregister_fd(struct bsc_fd *fd);
-int bsc_select_main(void);
+int bsc_select_main(int polling);
 #endif /* _BSC_SELECT_H */