diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index a882711e522b..a27b3e3ae84b 100644
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -287,6 +287,7 @@ proc0_init(void *dummy __unused)
 	 * Create process 0 (the swapper).
 	 */
 	LIST_INSERT_HEAD(&allproc, p, p_list);
+	LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
 	p->p_pgrp = &pgrp0;
 	LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 	LIST_INIT(&pgrp0.pg_members);