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-rw-r--r--src/btree.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/btree.h b/src/btree.h
index 13b0a4b..5405e7e 100644
--- a/src/btree.h
+++ b/src/btree.h
@@ -36,7 +36,7 @@ struct btree* btree_new_with_allocator(
void *(*alloc)(size_t),
void (*dealloc)(void*));
-void btree_free(struct btree *btree);
+void btree_free(struct btree **btree);
void* btree_search(struct btree *btree, void *elem);
void btree_insert(struct btree *btree, void *elem);