diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index a5604bf..67a1825 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -461,6 +461,7 @@
 					  session_evt_type_t evt_type);
 int session_program_tx_io_evt (session_handle_tu_t sh,
 			       session_evt_type_t evt_type);
+int session_program_rx_io_evt (session_handle_tu_t sh);
 void session_send_rpc_evt_to_thread (u32 thread_index, void *fp,
 				     void *rpc_args);
 void session_send_rpc_evt_to_thread_force (u32 thread_index, void *fp,