Fix library version conflict errors

1 files changed, 1 insertions, 1 deletions

diff --git a/src/window_controller.rs b/src/window_controller.rs
index 78af0e1..c655d5d 100644
--- a/src/window_controller.rs
+++ b/src/window_controller.rs
@@ -23,7 +23,7 @@ pub trait WindowController {
     fn on_move(&mut self, _position: Point) {}
     fn on_focus_change(&mut self, _is_focused: bool) {}
     fn on_process(&mut self) {}
-    fn on_render(&mut self, _buffer: &mut Buffer, _hint: RenderHint) {}
+    fn on_render(&mut self, _buffer: &mut buffer::Buffer, _hint: RenderHint) {}
     fn on_close_request(&mut self) {}
     fn on_close(&mut self) {}