Index: generic/include/ipc/ipc.h
===================================================================
--- generic/include/ipc/ipc.h	(revision 2ba78108c2b47014f0f5835ad107f014e6f9e4d0)
+++ generic/include/ipc/ipc.h	(revision b1fd4f0d27464f1c0d19fe9eba51e64568127c4f)
@@ -38,6 +38,7 @@
 
 /* Flags for calls */
-#define IPC_CALL_ANSWERED      1 /**< This is answer to a call */
-#define IPC_CALL_STATIC_ALLOC  2 /**< This call will not be freed on error */
+#define IPC_CALL_ANSWERED      0x1 /**< This is answer to a call */
+#define IPC_CALL_STATIC_ALLOC  0x2 /**< This call will not be freed on error */
+#define IPC_CALL_DISPATCHED    0x4 /**< Call is in dispatch queue */
 
 /* Flags for ipc_wait_for_call */