diff --git a/sys/kern/kern_jail.c b/sys/kern/kern_jail.c
index cfe2641..95e5490 100644
--- a/sys/kern/kern_jail.c
+++ b/sys/kern/kern_jail.c
@@ -369,6 +369,10 @@ prison_replace_wildcards(struct thread *td, struct sockaddr *ip)
 
 	if (td->td_proc == NULL)
 		return (1);
+
+	if (td->td_ucred == NULL)
+		return (1);
+
 	if ((pr = td->td_ucred->cr_prison) == NULL)
 		return (1);