diff --git a/sys/fs/pseudofs/pseudofs.c b/sys/fs/pseudofs/pseudofs.c
index cef0a02a273d..44473a926182 100644
--- a/sys/fs/pseudofs/pseudofs.c
+++ b/sys/fs/pseudofs/pseudofs.c
@@ -51,7 +51,7 @@ __FBSDID("$FreeBSD$");
 
 static MALLOC_DEFINE(M_PFSNODES, "pfs_nodes", "pseudofs nodes");
 
-SYSCTL_NODE(_vfs, OID_AUTO, pfs, CTLFLAG_RW, 0,
+SYSCTL_NODE(_vfs, OID_AUTO, pfs, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
     "pseudofs");
 
 #ifdef PSEUDOFS_TRACE
diff --git a/sys/fs/pseudofs/pseudofs_vncache.c b/sys/fs/pseudofs/pseudofs_vncache.c
index 1a127e5e1998..6fd73babaf30 100644
--- a/sys/fs/pseudofs/pseudofs_vncache.c
+++ b/sys/fs/pseudofs/pseudofs_vncache.c
@@ -54,7 +54,7 @@ static eventhandler_tag pfs_exit_tag;
 static void pfs_exit(void *arg, struct proc *p);
 static void pfs_purge_all(void);
 
-static SYSCTL_NODE(_vfs_pfs, OID_AUTO, vncache, CTLFLAG_RW, 0,
+static SYSCTL_NODE(_vfs_pfs, OID_AUTO, vncache, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
     "pseudofs vnode cache");
 
 static int pfs_vncache_entries;