diff --git a/include/sched.h b/include/sched.h
index 0cf488fd7f3..b2b9eef60d8 100644
--- a/include/sched.h
+++ b/include/sched.h
@@ -51,9 +51,10 @@
 
 /* POSIX-like scheduling policies */
 
-#define SCHED_FIFO  1  /* FIFO per priority scheduling policy */
-#define SCHED_RR    2  /* Round robin scheduling policy */
-#define SCHED_OTHER 4  /* Not used */
+#define SCHED_FIFO     1  /* FIFO per priority scheduling policy */
+#define SCHED_RR       2  /* Round robin scheduling policy */
+#define SCHED_SPORADIC 3  /* Not supported */
+#define SCHED_OTHER    4  /* Not supported */
 
 /* Pthread definitions **********************************************************/