diff --git a/contrib/python/hooks.py b/contrib/python/hooks.py
index a36167eb..02ff3889 100644
--- a/contrib/python/hooks.py
+++ b/contrib/python/hooks.py
@@ -24,10 +24,10 @@ dumbprefixes = {
 
 cygwin = re.compile("cygwin\.com")
 cygwin_sub1 = re.compile('<body bgcolor="#000000" color="#000000"')
-cygwin_sub2 = re.compile('<body bgcolor="#ffffff" color="#000000"')
+cygwin_sub2 = '<body bgcolor="#ffffff" color="#000000"'
 mbank = re.compile('https://www\.mbank\.com\.pl/ib_navibar_3\.asp')
 mbank_sub1 = re.compile('<td valign="top"><img')
-mbank_sub2 = re.compile('<tr><td valign="top"><img')
+mbank_sub2 = '<tr><td valign="top"><img'
 google_redirect = re.compile('^http://www\.google\.com/url\?sa=D&q=(.*)')
 
 def goto_url_hook(url, current_url):
@@ -46,10 +46,10 @@ def follow_url_hook(url):
 
 def pre_format_html_hook(url, html):
 	if cygwin.search(url):
-		re.sub(cygwin_sub1, cygwin_sub2, html)
+		html2 = cygwin_sub1.sub(cygwin_sub2, html)
 		return html2
 	if mbank.search(url):
-		html2 = re.sub(mbank_sub1, mbank_sub2, html)
+		html2 = mbank_sub1.sub(mbank_sub2, html)
 		return html2
 	return None
 
