diff --git a/changes/31.8.0.md b/changes/31.8.0.md
index 5c2e54166e..13c9d20f98 100644
--- a/changes/31.8.0.md
+++ b/changes/31.8.0.md
@@ -3,3 +3,4 @@
   - MUSICAL SYMBOL RINFORZANDO (`U+1D18C`) ... MUSICAL SYMBOL FORTE (`U+1D191`) (#2522).
 * Improve glyph for Cyrillic I (`И`/`и`) under slab (#2489).
   - Bulgarian locale (`'BGR'`) uses original style for capital.
+* Optimize glyph for Tonos Above (`U+0384`) in accented Greek letters.
diff --git a/packages/font-glyphs/src/marks/above.ptl b/packages/font-glyphs/src/marks/above.ptl
index 8c2ff783c0..254b50ddd8 100644
--- a/packages/font-glyphs/src/marks/above.ptl
+++ b/packages/font-glyphs/src/marks/above.ptl
@@ -818,8 +818,8 @@ glyph-block Mark-Above : begin
 		include : StdAnchors.narrow
 		local shift : 0.05 * markExtend + [HSwToV : markStress - markFine]
 		include : dispiro
-			flat (markMiddle + shift) (aboveMarkTop + 0.4 * markStress) [widths.center : markStress * 2]
-			curl (markMiddle - 0.5 * shift) aboveMarkBot [widths.center : markFine * 2]
+			flat (markMiddle + shift) (aboveMarkTop + 0.4 * markStress) [widths.center.heading (markStress * 2) Downward]
+			curl (markMiddle - 0.5 * shift) aboveMarkBot [widths.center.heading (markFine * 2) Downward]
 
 	create-glyph 'tonosGrekUpperTonos' : glyph-proc
 		set-width 0