diff --git a/glyphs/letters-unified-basic.ptl b/glyphs/letters-unified-basic.ptl
index 4fc3829b5..c3b5eaacf 100644
--- a/glyphs/letters-unified-basic.ptl
+++ b/glyphs/letters-unified-basic.ptl
@@ -2324,7 +2324,7 @@ glyph-block LetterUnified-Basic : begin
 			local left : SB + offset
 
 			if (bowlTop - bowlBottom <= sma + smb) : begin
-				local turn : mix bowlTop bowlBottom (smb / (sma + smb))
+				local turn : mix bowlTop bowlBottom (sma / (sma + smb))
 				return : list
 					flat (Width - SB * mul + O) bowlTop [heading Leftward]
 					curl (left + turnRadius - CorrectionOMidS) bowlTop