diff --git a/sys/kern/kern_thread.c b/sys/kern/kern_thread.c
index 1586d6c664f..102ba609cae 100644
--- a/sys/kern/kern_thread.c
+++ b/sys/kern/kern_thread.c
@@ -31,8 +31,6 @@
 #include "opt_witness.h"
 #include "opt_hwpmc_hooks.h"
 
-#include <sys/cdefs.h>
-#include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/lock.h>