diff --git a/arch/sim/src/nuttx-names.dat b/arch/sim/src/nuttx-names.dat
index 0ab31287530..698df015764 100644
--- a/arch/sim/src/nuttx-names.dat
+++ b/arch/sim/src/nuttx-names.dat
@@ -60,6 +60,7 @@ setsockopt     NXsetsockopt
 sigaction      NXsigaction
 sighold        NXsighold
 sigprocmask    NXsigprocmask
+sigtimedwait   NXsigtimedwait
 sigrelse       NXsigrelse
 sleep          NXsleep
 socket         NXsocket