1 files changed, 3 insertions, 3 deletions
diff --git a/zix/tree.c b/zix/tree.c
index 844adb9..9915e89 100644
--- a/zix/tree.c
+++ b/zix/tree.c
@@ -612,7 +612,7 @@ zix_tree_find(const ZixTree* t, const void* e, ZixTreeIter** ti)
 }
 
 ZIX_API void*
-zix_tree_get(ZixTreeIter* ti)
+zix_tree_get(const ZixTreeIter* ti)
 {
 	return ti ? ti->data : NULL;
 }
@@ -658,13 +658,13 @@ zix_tree_rend(ZixTree* t)
 }
 
 ZIX_API bool
-zix_tree_iter_is_end(ZixTreeIter* i)
+zix_tree_iter_is_end(const ZixTreeIter* i)
 {
 	return !i;
 }
 
 ZIX_API bool
-zix_tree_iter_is_rend(ZixTreeIter* i)
+zix_tree_iter_is_rend(const ZixTreeIter* i)
 {
 	return !i;
 }