diff --git a/share/man/man9/style.9 b/share/man/man9/style.9
index 710dc3def508..47ae82fb6430 100644
--- a/share/man/man9/style.9
+++ b/share/man/man9/style.9
@@ -22,7 +22,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$Id: style.9,v 1.17 1997/04/09 19:03:14 mpp Exp $
+.\"	$Id: style.9,v 1.18 1997/05/27 10:00:08 peter Exp $
 .\"
 .Dd December 14, 1995
 .Dt STYLE 9
@@ -51,7 +51,8 @@ source tree.  It is also a guide for preferred user land code style.
  */
 .Ed
 .Pp
-Kernel include files come first; normally, you'll need <sys/types.h>
+Kernel include files (i.e. sys/*.h) come first; normally, you'll need
+<sys/types.h>
 OR <sys/param.h>, but not both!  <sys/types.h> includes <sys/cdefs.h>,
 and it's okay to depend on that.
 .Bd -literal -offset 0i