diff --git a/danmaku2ass.py b/danmaku2ass.py
index 3a3fa86..1854193 100755
--- a/danmaku2ass.py
+++ b/danmaku2ass.py
@@ -653,7 +653,7 @@ Style: %(styleid)s, %(fontface)s, %(fontsize).0f, &H%(alpha)02XFFFFFF, &H%(alpha
 
 [Events]
 Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
-''' % {'width': width, 'height': height, 'fontface': fontface, 'fontsize': fontsize, 'alpha': 255-round(alpha*255), 'outline': min(fontsize/25.0, 1), 'styleid': styleid}
+''' % {'width': width, 'height': height, 'fontface': fontface, 'fontsize': fontsize, 'alpha': 255-round(alpha*255), 'outline': max(fontsize/25.0, 1), 'styleid': styleid}
     )