diff --git a/sys/kern/kern_cpuset.c b/sys/kern/kern_cpuset.c
index 47845efb54c0..71481fe7503f 100644
--- a/sys/kern/kern_cpuset.c
+++ b/sys/kern/kern_cpuset.c
@@ -113,7 +113,7 @@ static struct unrhdr *cpuset_unr;
 static struct cpuset *cpuset_zero, *cpuset_default;
 
 /* Return the size of cpuset_t at the kernel level */
-SYSCTL_INT(_kern_sched, OID_AUTO, cpusetsize, CTLFLAG_RD,
+SYSCTL_INT(_kern_sched, OID_AUTO, cpusetsize, CTLFLAG_RD | CTLFLAG_CAPRD,
     SYSCTL_NULL_INT_PTR, sizeof(cpuset_t), "sizeof(cpuset_t)");
 
 cpuset_t *cpuset_root;