diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c
index 5101f877acd..ff49fa5ee74 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c
@@ -23,7 +23,7 @@
  * Copyright (c) 2011 by Delphix. All rights reserved.
  * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>.
  * All rights reserved.
- * Portions Copyright 2011 Martin Matuska <mm@FreeBSd.org>
+ * Portions Copyright (c) 2011 Martin Matuska <mm@FreeBSD.org>
  */
 
 #include <sys/dmu_objset.h>