diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c
index d5162edd1487..62b058101797 100644
--- a/sys/kern/sched_ule.c
+++ b/sys/kern/sched_ule.c
@@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/kdb.h>
 #include <sys/kernel.h>
 #include <sys/ktr.h>
+#include <sys/limits.h>
 #include <sys/lock.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>