diff --git a/sys/dev/sound/pci/cmi.c b/sys/dev/sound/pci/cmi.c
index cda1e8293063..32edd0386450 100644
--- a/sys/dev/sound/pci/cmi.c
+++ b/sys/dev/sound/pci/cmi.c
@@ -22,7 +22,9 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
  * SUCH DAMAGE.
- *
+ */
+
+/*
  * This driver exists largely as a result of other people's efforts.
  * Much of register handling is based on NetBSD CMI8x38 audio driver
  * by Takuya Shiozaki <AoiMoe@imou.to>.  Chen-Li Tien
diff --git a/sys/dev/sound/pci/cs4281.c b/sys/dev/sound/pci/cs4281.c
index 5b4b8216e1ad..665d7a570fa2 100644
--- a/sys/dev/sound/pci/cs4281.c
+++ b/sys/dev/sound/pci/cs4281.c
@@ -22,7 +22,9 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
  * SUCH DAMAGE.
- *
+ */
+
+/*
  * The order of pokes in the initiation sequence is based on Linux
  * driver by Thomas Sailer, gw boynton (wesb@crystal.cirrus.com), tom
  * woller (twoller@crystal.cirrus.com).  Shingo Watanabe (nabe@nabechan.org)
diff --git a/sys/dev/sound/pci/vibes.c b/sys/dev/sound/pci/vibes.c
index ee205fe686d5..17d0d07b80b6 100644
--- a/sys/dev/sound/pci/vibes.c
+++ b/sys/dev/sound/pci/vibes.c
@@ -22,7 +22,9 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
- *
+ */
+
+/*
  * This card has the annoying habit of "clicking" when attached and
  * detached, haven't been able to remedy this with any combination of
  * muting.