diff --git a/include/sched.h b/include/sched.h
index aec9d3f06ab..9804e46a413 100644
--- a/include/sched.h
+++ b/include/sched.h
@@ -254,6 +254,9 @@ int    sched_getaffinity(pid_t pid, size_t cpusetsize, FAR cpu_set_t *mask);
 int    sched_cpucount(FAR const cpu_set_t *set);
 int    sched_getcpu(void);
 #else
+#  define sched_setaffinity(p, c, m) 0
+#  define sched_getaffinity(p, c, m) (*(m) |= (1 << 0), 0)
+#  define sched_cpucount(s) 1
 #  define sched_getcpu() 0
 #endif /* CONFIG_SMP */