diff --git a/packages/font-glyphs/src/symbol/punctuation/percentages.ptl b/packages/font-glyphs/src/symbol/punctuation/percentages.ptl
index 1680028de..5815cee62 100644
--- a/packages/font-glyphs/src/symbol/punctuation/percentages.ptl
+++ b/packages/font-glyphs/src/symbol/punctuation/percentages.ptl
@@ -53,7 +53,7 @@ glyph-block Symbol-Punctuation-Percentages : begin
 
 	create-glyph 'basepoint.NWID.dots' : glyph-proc
 		define df : include : DivFrame para.advanceScaleM
-		define slopeDf : DivFrame para.advanceScaleT
+		define slopeDf : DivFrame : Math.min 1 : para.advanceScaleM * 0.8
 
 		define refSw : AdviceStroke 5 df.adws