Index: kernel/generic/include/syscall/syscall.h
===================================================================
--- kernel/generic/include/syscall/syscall.h	(revision 9a1b20c34d5404b8272209d06c0239aa1a2384da)
+++ kernel/generic/include/syscall/syscall.h	(revision 4bc73fa8bbcccf620136bf8a8217a30c0a840d89)
@@ -63,4 +63,5 @@
 	SYS_IPC_ANSWER_SLOW,
 	SYS_IPC_FORWARD_FAST,
+	SYS_IPC_FORWARD_SLOW,
 	SYS_IPC_WAIT,
 	SYS_IPC_HANGUP,