diff --git a/src/xdocs/config_regexp.xml b/src/xdocs/config_regexp.xml
index ba4296dcc..bf5bcb84d 100644
--- a/src/xdocs/config_regexp.xml
+++ b/src/xdocs/config_regexp.xml
@@ -762,6 +762,23 @@
         </ul>
       </subsection>
 
+      <subsection name="Error Messages">
+        <ul>
+          <li>
+            <a href="https://github.com/search?q=path%3Asrc%2Fmain%2Fresources%2Fcom%2Fpuppycrawl%2Ftools%2Fcheckstyle%2Fchecks%2Fregexp+filename%3Amessages*.properties+repo%3Acheckstyle%2Fcheckstyle+%22regexp.filename.match%22">
+            regexp.filename.match</a>
+          </li>
+          <li>
+            <a href="https://github.com/search?q=path%3Asrc%2Fmain%2Fresources%2Fcom%2Fpuppycrawl%2Ftools%2Fcheckstyle%2Fchecks%2Fregexp+filename%3Amessages*.properties+repo%3Acheckstyle%2Fcheckstyle+%22regexp.filename.mismatch%22">
+            regexp.filename.mismatch</a>
+          </li>
+        </ul>
+        <p>
+          All messages can be customized if the default message doesn't suite you.
+          Please <a href="config.html#Custom_messages">see the documentation</a> to learn how to.
+        </p>
+      </subsection>
+
       <subsection name="Package">
         <p>
           com.puppycrawl.tools.checkstyle.checks.regexp