diff --git a/danmaku2ass.py b/danmaku2ass.py
index 3f832a4..9a9eb44 100755
--- a/danmaku2ass.py
+++ b/danmaku2ass.py
@@ -384,11 +384,11 @@ PlayResY: %(height)s
 
 [V4+ Styles]
 Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
-Style: %(styleid)s, %(fontface)s, %(fontsize)s, &H%(alpha)02XFFFFFF, &H%(alpha)02XFFFFFF, &H%(alpha)02X000000, &H%(alpha)02X000000, 0, 0, 0, 0, 100, 100, 0.00, 0.00, 1, 1, 0, 7, 20, 20, 20, 0
+Style: %(styleid)s, %(fontface)s, %(fontsize)s, &H%(alpha)02XFFFFFF, &H%(alpha)02XFFFFFF, &H%(alpha)02X000000, &H%(alpha)02X000000, 0, 0, 0, 0, 100, 100, 0.00, 0.00, 1, %(outline)s, 0, 7, 0, 0, 0, 0
 
 [Events]
 Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
-''' % {'width': width, 'height': height, 'fontface': fontface, 'fontsize': round(fontsize), 'alpha': 255-round(alpha*255), 'styleid': styleid}
+''' % {'width': width, 'height': height, 'fontface': fontface, 'fontsize': round(fontsize), 'alpha': 255-round(alpha*255), 'outline': round(fontsize/25), 'styleid': styleid}
     )