diff --git a/arch/sim/src/nuttx-names.dat b/arch/sim/src/nuttx-names.dat
index 7cfe1bd389..634f4ea8cc 100644
--- a/arch/sim/src/nuttx-names.dat
+++ b/arch/sim/src/nuttx-names.dat
@@ -33,6 +33,9 @@ rmdir          NXrmdir
 seekdir        NXseekdir
 select         NXselect
 send           NXsend
+sighold        NXsighold
+sigprocmask    NXsigprocmask
+sigrelse       NXsigrelse
 sendto         NXsendto
 sleep          NXsleep
 socket         NXsocket