diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index 173602e87c14..e595ae5cd0ee 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -577,7 +577,7 @@ void maple_tree_init(void);
 void mas_destroy(struct ma_state *mas);
 
 void *mas_prev(struct ma_state *mas, unsigned long min);
-void *mas_prev_range(struct ma_state *mas, unsigned long max);
+void *mas_prev_range(struct ma_state *mas, unsigned long min);
 void *mas_next(struct ma_state *mas, unsigned long max);
 void *mas_next_range(struct ma_state *mas, unsigned long max);