diff --git a/arch/pjrc-8051/src/up_unblocktask.c b/arch/pjrc-8051/src/up_unblocktask.c
index 76bc693c977..303283c28b4 100644
--- a/arch/pjrc-8051/src/up_unblocktask.c
+++ b/arch/pjrc-8051/src/up_unblocktask.c
@@ -38,10 +38,13 @@
  ************************************************************/
 
 #include <nuttx/config.h>
+
 #include <sys/types.h>
 #include <sched.h>
 #include <debug.h>
+
 #include <nuttx/arch.h>
+
 #include "clock_internal.h"
 #include "os_internal.h"
 #include "up_internal.h"