diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index aa4776b..a5604bf 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -448,6 +448,7 @@
 void session_half_close (session_t *s);
 void session_close (session_t * s);
 void session_reset (session_t * s);
+void session_detach_app (session_t *s);
 void session_transport_half_close (session_t *s);
 void session_transport_close (session_t * s);
 void session_transport_reset (session_t * s);