diff --git a/src/core/libosmocore.map b/src/core/libosmocore.map
index fc81650..30c4927 100644
--- a/src/core/libosmocore.map
+++ b/src/core/libosmocore.map
@@ -510,6 +510,8 @@
 osmo_strrb_get_nth;
 _osmo_strrb_is_bufindex_valid;
 osmo_strrb_is_empty;
+osmo_strbuf_drop_tail;
+osmo_strbuf_added_tail;
 osmo_str_startswith;
 osmo_str_to_int;
 osmo_str_to_int64;