1 files changed, 3 insertions, 1 deletions

diff --git a/usr.bin/tr/tr.1 b/usr.bin/tr/tr.1
index 9adc13299f3b..f46a95c6f224 100644
--- a/usr.bin/tr/tr.1
+++ b/usr.bin/tr/tr.1
@@ -249,7 +249,9 @@ Strip out non-printable characters from file1.
 .D1 Li "tr -cd \*q[:print:]\*q < file1"
 .Sh COMPATIBILITY
 System V has historically implemented character ranges using the syntax
-``[c-c]'' instead of the ``c-c'' used by historic BSD implementations and
+``[c-c]'' instead of the ``c-c'' used by historic
+.Bx
+implementations and
 standardized by POSIX.
 System V shell scripts should work under this implementation as long as
 the range is intended to map in another range, i.e. the command