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
@@ -152,3 +152,3 @@ namespace opkele {
 
-            virtual void to_htmlhiddens(ostream& o) const;
+            virtual void to_htmlhiddens(ostream& o,const char* pfx=0) const;