1 files changed, 1 insertions, 1 deletions

diff --git a/src/xterm.c b/src/xterm.c
index d73e57b5ad8..baa017361fb 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -5128,7 +5128,7 @@ expose_window_tree (w, r)
           window_rect.x
             = (window_x
                - FRAME_X_FLAGS_AREA_WIDTH (f)
-               - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * CANON_Y_UNIT (f));
+               - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * CANON_X_UNIT (f));
           window_rect.y = window_y;
           window_rect.width
             = (window_width