diff --git a/generator.py b/generator.py
index f33576b..fd2dcc4 100755
--- a/generator.py
+++ b/generator.py
@@ -19,7 +19,7 @@ def fromunixtime(value):
     return datetime.fromtimestamp(value).strftime('%Y-%m-%d %H:%M:%S')
 
 def url_replacer(value):
-    return value.replace('/', '_').replace(' ', '_').replace('?', '').replace('<', '').replace('>', '')
+    return re.sub('[^a-zA-Z0-9\n\.]', '_', value)
 
 def user_replacer(match):
     return '[url=../../user/' + url_replacer(match.group(2)) + '.html]' + match.group(2) + '[/url]'