diff --git a/sys/kern/kern_poll.c b/sys/kern/kern_poll.c
index 64deb7132710..0f6650b50a5c 100644
--- a/sys/kern/kern_poll.c
+++ b/sys/kern/kern_poll.c
@@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/epoch.h>
 #include <sys/eventhandler.h>
 #include <sys/resourcevar.h>
+#include <sys/sched.h>
 #include <sys/socket.h>			/* needed by net/if.h		*/
 #include <sys/sockio.h>
 #include <sys/sysctl.h>