diff --git a/sched/pthread/pthread_kill.c b/sched/pthread/pthread_kill.c
index b6ca8ab74d..7c9609a4d6 100644
--- a/sched/pthread/pthread_kill.c
+++ b/sched/pthread/pthread_kill.c
@@ -47,6 +47,7 @@
 
 #include <nuttx/sched.h>
 
+#include "sched/sched.h"
 #include "signal/signal.h"
 
 /************************************************************************