1 files changed, 2 insertions, 0 deletions

diff --git a/include/opkele/types.h b/include/opkele/types.h
index d5ad258..842a722 100644
--- a/include/opkele/types.h
+++ b/include/opkele/types.h
@@ -32,2 +32,3 @@ namespace opkele {
     typedef enum _mode_t {
+        mode_unknown = 0,
         mode_associate,
@@ -147,2 +148,3 @@ namespace opkele {
             virtual void from_keyvalues(const string& kv);
+            virtual void to_keyvalues(ostream& o) const;