diff --git a/glyphs/symbol-ascii.patel b/glyphs/symbol-ascii.patel
index f994782..2cfced7 100644
--- a/glyphs/symbol-ascii.patel
+++ b/glyphs/symbol-ascii.patel
@@ -427,7 +427,7 @@ create-glyph 'percent' : glyph-construction
 	set-width WIDTH
 	assign-unicode '%'
 	local dotwidth ([adviceBlackness 4] * 1.5)
-	local cor : 1 / [Math.sqrt (1 - [Math.pow ((RIGHTSB - SB - STROKE) / (CAP - 0)) 2])]
+	local cor : CORRECTION_HX / [Math.sqrt (1 - [Math.pow ((RIGHTSB - SB - STROKE) / (CAP - 0)) 2])]
 	
 	start-from SB 0
 	line-to (SB + STROKE * cor) 0
diff --git a/pass4-finalize.js b/pass4-finalize.js
index c817f07..ba9a4db 100644
--- a/pass4-finalize.js
+++ b/pass4-finalize.js
@@ -46,4 +46,8 @@ ttf['OS/2'].sCapHeight = param.iosevka.cap
 ttf['OS/2'].fsSelection |= (ttf['OS/2'].usWeightClass > 400 ? 1 << 5 : 0) | (ttf.post.italicAngle ? 1 : 0)
 ttf.head.macStyle |= (ttf['OS/2'].usWeightClass > 400 ? 1 : 0) | (ttf.post.italicAngle ? 2 : 0)
 ttf.post.isFixedPitch = 1                            // mono
+ttf.DSIG = {                                         // add a dummy SDIG
+    name: 'DSIG',
+    content: [0, 1, 0, 0]
+}
 fs.writeFileSync(process.argv[3], toBuffer(new TTFWriter(options).write(ttf)));
\ No newline at end of file