diff --git a/arch/sim/src/nuttx-names.in b/arch/sim/src/nuttx-names.in
index 9d405fddc27..1a72b10f228 100644
--- a/arch/sim/src/nuttx-names.in
+++ b/arch/sim/src/nuttx-names.in
@@ -61,6 +61,9 @@ NXSYMBOLS(opendir)
 NXSYMBOLS(perror)
 NXSYMBOLS(poll)
 NXSYMBOLS(posix_memalign)
+NXSYMBOLS(pthread_attr_init)
+NXSYMBOLS(pthread_attr_setstack)
+NXSYMBOLS(pthread_attr_destroy)
 NXSYMBOLS(pthread_cond_destroy)
 NXSYMBOLS(pthread_cond_init)
 NXSYMBOLS(pthread_cond_signal)