diff -r bc6e25dbfd04 -r 5ca6e0ab0227 web/facet.py
--- a/web/facet.py	Tue Jul 02 09:36:20 2013 +0200
+++ b/web/facet.py	Mon Jul 08 17:38:10 2013 +0200
@@ -1517,7 +1517,8 @@
             cssclass += ' hideFacetBody'
         w(u'<div class="%s" cubicweb:facetName="%s">%s</div>\n' %
                (cssclass, xml_escape(self.facet.__regid__), title))
-        w(u'<input name="%s" type="text" value="%s" />\n' % (facetid, self.value or u''))
+        w(u'<input name="%s" type="text" value="%s" />\n' % (
+                xml_escape(self.facet.__regid__), self.value or u''))
         w(u'</div>\n')