diff --git a/arch/sim/src/nuttx-names.in b/arch/sim/src/nuttx-names.in
index 1545dfd5c0d..a735846e147 100644
--- a/arch/sim/src/nuttx-names.in
+++ b/arch/sim/src/nuttx-names.in
@@ -78,6 +78,7 @@ NXSYMBOLS(malloc)
 NXSYMBOLS(malloc_size)
 NXSYMBOLS(malloc_usable_size)
 NXSYMBOLS(memcpy)
+NXSYMBOLS(memfd_create)
 NXSYMBOLS(mkdir)
 NXSYMBOLS(mmap)
 NXSYMBOLS(mprotect)
@@ -127,6 +128,8 @@ NXSYMBOLS(setitimer)
 NXSYMBOLS(setbuf)
 NXSYMBOLS(setjmp)
 NXSYMBOLS(setsockopt)
+NXSYMBOLS(shm_open)
+NXSYMBOLS(shm_unlink)
 NXSYMBOLS(shutdown)
 NXSYMBOLS(sigaction)
 NXSYMBOLS(sigaddset)