diff --git a/docs/sudoers.ldap.man.in b/docs/sudoers.ldap.man.in
index 43d6d6eb0..ca89f30b5 100644
--- a/docs/sudoers.ldap.man.in
+++ b/docs/sudoers.ldap.man.in
@@ -851,7 +851,7 @@ For example, using
 .sp
 .RS 10n
 $ ldapsearch -b $NETGROUP_BASE \e
-  '(&(objectClass=nisNetgroup)(nisNetgroupTriple=\28*,USER,\29))'
+  '(&(objectClass=nisNetgroup)(nisNetgroupTriple=\e28*,USER,\e29))'
 .RE
 .fi
 .sp
diff --git a/docs/sudoers.ldap.mdoc.in b/docs/sudoers.ldap.mdoc.in
index 486fd6a4c..0b0053959 100644
--- a/docs/sudoers.ldap.mdoc.in
+++ b/docs/sudoers.ldap.mdoc.in
@@ -796,7 +796,7 @@ For example, using
 .Sy ldapsearch :
 .Bd -literal -offset 4n
 $ ldapsearch -b $NETGROUP_BASE \e
-  '(&(objectClass=nisNetgroup)(nisNetgroupTriple=\28*,USER,\29))'
+  '(&(objectClass=nisNetgroup)(nisNetgroupTriple=\e28*,USER,\e29))'
 .Ed
 .Pp
 where your