diff --git a/sys/kern/kern_kse.c b/sys/kern/kern_kse.c
index ae329e52ae14..1837e2a9d2ea 100644
--- a/sys/kern/kern_kse.c
+++ b/sys/kern/kern_kse.c
@@ -35,6 +35,7 @@
 #include <sys/malloc.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
+#include <sys/smp.h>
 #include <sys/sysctl.h>
 #include <sys/sysproto.h>
 #include <sys/filedesc.h>
diff --git a/sys/kern/kern_thread.c b/sys/kern/kern_thread.c
index ae329e52ae14..1837e2a9d2ea 100644
--- a/sys/kern/kern_thread.c
+++ b/sys/kern/kern_thread.c
@@ -35,6 +35,7 @@
 #include <sys/malloc.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
+#include <sys/smp.h>
 #include <sys/sysctl.h>
 #include <sys/sysproto.h>
 #include <sys/filedesc.h>