1 files changed, 2 insertions, 2 deletions
diff --git a/zix/tree.h b/zix/tree.h
index db628a6..8639d25 100644
--- a/zix/tree.h
+++ b/zix/tree.h
@@ -40,12 +40,12 @@ typedef int (*ZixComparator)(const void* a, const void* b, void* user_data);
 /**
    A balanced binary search tree.
 */
-typedef struct _ZixTree ZixTree;
+typedef struct ZixTreeImpl ZixTree;
 
 /**
    A node in a @ref ZixTree.
 */
-typedef struct _ZixTreeNode ZixTreeNode;
+typedef struct ZixTreeNodeImpl ZixTreeNode;
 
 /**
    An iterator over a @ref ZixTree.