diff --git a/arch/sim/src/nuttx-names.in b/arch/sim/src/nuttx-names.in
index 38694ede2e0ff..9a47af018a863 100644
--- a/arch/sim/src/nuttx-names.in
+++ b/arch/sim/src/nuttx-names.in
@@ -81,6 +81,7 @@ NXSYMBOLS(lseek)
 NXSYMBOLS(malloc)
 NXSYMBOLS(malloc_size)
 NXSYMBOLS(malloc_usable_size)
+NXSYMBOLS(memchr)  
 NXSYMBOLS(memcpy)
 NXSYMBOLS(memfd_create)
 NXSYMBOLS(mkdir)