--- Libc/Libc-583/sys/SYSCALL-LIST
+++ Libc/Libc-391/sys/SYSCALL-LIST
@@ -57,6 +57,7 @@
 ioctl
 kill
 killpg
+ktrace
 link
 listen
 lseek
@@ -143,6 +144,5 @@
 waitpid
 wait3
 wait4
-waitid
 write
 writev