diff --git a/nostrdb/src/nostrdb.c b/nostrdb/src/nostrdb.c
index af4b4a65..7328fa4f 100644
--- a/nostrdb/src/nostrdb.c
+++ b/nostrdb/src/nostrdb.c
@@ -864,7 +864,7 @@ void ndb_filter_end_field(struct ndb_filter *filter)
 	filter->current = NULL;
 }
 
-static void ndb_filter_group_init(struct ndb_filter_group *group)
+void ndb_filter_group_init(struct ndb_filter_group *group)
 {
 	group->num_filters = 0;
 }
diff --git a/nostrdb/src/nostrdb.h b/nostrdb/src/nostrdb.h
index ce12c71d..ffffd756 100644
--- a/nostrdb/src/nostrdb.h
+++ b/nostrdb/src/nostrdb.h
@@ -470,6 +470,7 @@ int ndb_filter_start_generic_field(struct ndb_filter *, char tag);
 int ndb_filter_matches(struct ndb_filter *, struct ndb_note *);
 void ndb_filter_reset(struct ndb_filter *);
 void ndb_filter_end_field(struct ndb_filter *);
+void ndb_filter_group_init(struct ndb_filter_group *group);
 int ndb_filter_group_add(struct ndb_filter_group *group, struct ndb_filter *f);
 void ndb_filter_destroy(struct ndb_filter *);