diff -r cf5b910ac4c8 Lib/pydoc.py
--- a/Lib/pydoc.py	Sat Nov 15 10:58:58 2014 -0800
+++ b/Lib/pydoc.py	Mon Nov 17 22:56:05 2014 +0200
@@ -954,7 +954,7 @@ class HTMLDoc(Doc):
         if not argspec:
             argspec = '(...)'
 
-        decl = title + argspec + (note and self.grey(
+        decl = title + self.escape(argspec) + (note and self.grey(
                '<font face="helvetica, arial">%s</font>' % note))
 
         if skipdocs: