diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 041fb57..f3ef425 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,3 +1,3 @@
-*       @momijizukamori @sithel @cass-kazumori
+*       @momijizukamori @sithel @cass-kazumori @acestronautical
 /.github       @momijizukamori @sithel
 /.github/CODEOWNERS @momijizukamori
diff --git a/src/utils/drawing.js b/src/utils/drawing.js
index 3cd62a1..6cd5f55 100644
--- a/src/utils/drawing.js
+++ b/src/utils/drawing.js
@@ -221,7 +221,7 @@ export function drawSpineMark(draw_top_mark, position, w) {
     [endX, endY] = position.spineMarkBottom;
   }
 
-  if (position.rotation == 0) {
+  if (position.rotation == 0 || position.rotation == 180) {
     startX -= w / 2;
     endX += w / 2;
   } else {