diff --git a/doc/sudoers.man.in b/doc/sudoers.man.in
index 41cc826ba..73d769212 100644
--- a/doc/sudoers.man.in
+++ b/doc/sudoers.man.in
@@ -25,7 +25,7 @@
 .nr BA @BAMAN@
 .nr LC @LCMAN@
 .nr PS @PSMAN@
-.TH "SUDOERS" "@mansectform@" "February 16, 2020" "Sudo @PACKAGE_VERSION@" "File Formats Manual"
+.TH "SUDOERS" "@mansectform@" "March 3, 2020" "Sudo @PACKAGE_VERSION@" "File Formats Manual"
 .nh
 .if n .ad l
 .SH "NAME"
@@ -1111,6 +1111,21 @@ when they contain multiple words.
 Special characters may be escaped with a backslash
 (\(oq\e\(cq).
 .PP
+To include a literal backslash character in a command line argument
+you must escape the backslash twice.
+For example, to match
+\(oq\en\(cq
+as part of a command line argument, you must use
+\(oq\e\e\e\en\(cq
+in the
+\fIsudoers\fR
+file.
+This is due to there being two levels of escaping, one in the
+\fIsudoers\fR
+parser itself and another when command line arguments are matched by the
+fnmatch(3)
+function.
+.PP
 Lists have two additional assignment operators,
 \fR+=\fR
 and
diff --git a/doc/sudoers.mdoc.in b/doc/sudoers.mdoc.in
index 71ae8dab7..644fb8473 100644
--- a/doc/sudoers.mdoc.in
+++ b/doc/sudoers.mdoc.in
@@ -24,7 +24,7 @@
 .nr BA @BAMAN@
 .nr LC @LCMAN@
 .nr PS @PSMAN@
-.Dd February 16, 2020
+.Dd March 3, 2020
 .Dt SUDOERS @mansectform@
 .Os Sudo @PACKAGE_VERSION@
 .Sh NAME
@@ -1065,6 +1065,21 @@ when they contain multiple words.
 Special characters may be escaped with a backslash
 .Pq Ql \e .
 .Pp
+To include a literal backslash character in a command line argument
+you must escape the backslash twice.
+For example, to match
+.Ql \en
+as part of a command line argument, you must use
+.Ql \e\e\e\en
+in the
+.Em sudoers
+file.
+This is due to there being two levels of escaping, one in the
+.Em sudoers
+parser itself and another when command line arguments are matched by the
+.Xr fnmatch 3
+function.
+.Pp
 Lists have two additional assignment operators,
 .Li +=
 and