diff --git a/lib/libc/locale/big5.5 b/lib/libc/locale/big5.5
index 2daf8b1bb41..8eb1a6a9ddb 100644
--- a/lib/libc/locale/big5.5
+++ b/lib/libc/locale/big5.5
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 12, 2019
+.Dd April 1, 2020
 .Dt BIG5 5
 .Os
 .Sh NAME
@@ -39,9 +39,8 @@ encoding for Traditional Chinese text
 .Dq Big Five
 is a standard for encoding Traditional Chinese text.
 Each character is represented by either one or two bytes.
-Characters from the
-.Tn ASCII
-character set are represented as single bytes in the range 0x00 - 0x7F.
+Characters from the ASCII character set are represented as
+single bytes in the range 0x00 - 0x7F.
 Traditional Chinese characters are represented by two bytes:
 the first in the range 0xA1 - 0xFE, the second in the range
 0x40 - 0xFE.
@@ -51,7 +50,11 @@ the first in the range 0xA1 - 0xFE, the second in the range
 .Xr utf8 5
 .Sh BUGS
 The range of the second byte overlaps some ASCII characters, including
-0x5C (`\\') and 0x7C (`|') which may cause problems in program execution or
+0x5C
+.Pq Ql \e
+and 0x7C
+.Pq Ql |
+which may cause problems in program execution or
 display.
 Big5 is considered a legacy standard and only preserved for backward
 compatibility reason.