diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index 66bf9fc3fba..a4e9790bbc0 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -466,7 +466,7 @@ pmap_pcid_save_cnt_proc(SYSCTL_HANDLER_ARGS)
 	}
 	return (sysctl_handle_64(oidp, &res, 0, req));
 }
-SYSCTL_PROC(_vm_pmap, OID_AUTO, pcid_save_cnt, CTLTYPE_U64 | CTLFLAG_RW |
+SYSCTL_PROC(_vm_pmap, OID_AUTO, pcid_save_cnt, CTLTYPE_U64 | CTLFLAG_RD |
     CTLFLAG_MPSAFE, NULL, 0, pmap_pcid_save_cnt_proc, "QU",
     "Count of saved TLB context on switch");