diff --git a/doc/xml/faq.xml b/doc/xml/faq.xml
index ab454b0e6..09d79466a 100644
--- a/doc/xml/faq.xml
+++ b/doc/xml/faq.xml
@@ -102,6 +102,17 @@ process-max=1
         <p>See the <link url="user-guide.html#pitr">Point-in-Time Recovery</link> section of the <proper>User Guide</proper> for more information.</p>
     </section>
 
+    <!--
+        At least these issues have been asking about this:
+            https://github.com/pgbackrest/pgbackrest/issues/1485
+            https://github.com/pgbackrest/pgbackrest/issues/1663
+    -->
+    <section id="archive-suffix">
+        <title>What does the WAL archive suffix mean?</title>
+
+        <p>The suffix is the SHA1 checksum used to verify file integrity. There is no way to omit it.</p>
+    </section>
+
     <!-- <section id="different-server">
         <title>How to restore a backup to a different server (for example, a production backup to a development server)?</title>
 
diff --git a/doc/xml/release.xml b/doc/xml/release.xml
index d5118fa27..58d2fc3dd 100644
--- a/doc/xml/release.xml
+++ b/doc/xml/release.xml
@@ -273,6 +273,19 @@
                 </release-bug-list>
 
                 <release-improvement-list>
+                    <release-item>
+                        <github-issue id="1485"/>
+                        <github-issue id="1663"/>
+                        <github-pull-request id="1664"/>
+
+                        <release-item-contributor-list>
+                            <release-item-contributor id="stefan.fercot"/>
+                            <release-item-reviewer id="david.steele"/>
+                        </release-item-contributor-list>
+
+                        <p>Add FAQ explaining WAL archive suffix.</p>
+                    </release-item>
+
                     <release-item>
                         <github-issue id="1585"/>
                         <github-pull-request id="1601"/>