Index: sys/kern/vfs_subr.c
===================================================================
--- sys/kern/vfs_subr.c
+++ sys/kern/vfs_subr.c
@@ -6016,7 +6016,8 @@
 filt_fsevent(struct knote *kn, long hint)
 {
 
-	kn->kn_fflags |= hint;
+	kn->kn_fflags |= kn->kn_sfflags & hint;
+
 	return (kn->kn_fflags != 0);
 }