diff --git a/openerp/http.py b/openerp/http.py
index 1b717590943..ceeb58d1cdc 100644
--- a/openerp/http.py
+++ b/openerp/http.py
@@ -1709,6 +1709,7 @@ def db_filter(dbs, httprequest=None):
     d, _, r = h.partition('.')
     if d == "www" and r:
         d = r.partition('.')[0]
+    d, h = re.escape(d), re.escape(h)
     r = openerp.tools.config['dbfilter'].replace('%h', h).replace('%d', d)
     dbs = [i for i in dbs if re.match(r, i)]
     return dbs