1 files changed, 1 insertions, 1 deletions

diff --git a/include/opkele/types.h b/include/opkele/types.h
index a3b657d..1f48362 100644
--- a/include/opkele/types.h
+++ b/include/opkele/types.h
@@ -137,33 +137,33 @@ namespace opkele {
             virtual string get_ns(const string& uri) const;
 
             virtual fields_iterator fields_begin() const = 0;
             virtual fields_iterator fields_end() const = 0;
 
             virtual string append_query(const string& url) const;
             virtual string query_string() const;
 
 
             virtual void reset_fields();
             virtual void set_field(const string& n,const string& v);
             virtual void reset_field(const string& n);
 
             virtual void from_keyvalues(const string& kv);
             virtual void to_keyvalues(ostream& o) const;
 
-            virtual void to_htmlhiddens(ostream& o) const;
+            virtual void to_htmlhiddens(ostream& o,const char* pfx=0) const;
 
             void add_to_signed(const string& fields);
             string find_ns(const string& uri,const char *pfx) const;
             string allocate_ns(const string& uri,const char *pfx);
     };
 
     class openid_message_t : public basic_openid_message, public map<string,string> {
         public:
             openid_message_t() { }
             openid_message_t(const basic_openid_message& x)
                 : basic_openid_message(x) { }
 
             void copy_to(basic_openid_message& x) const;
 
             bool has_field(const string& n) const;
             const string& get_field(const string& n) const;