1 files changed, 3 insertions, 3 deletions
diff --git a/develop/development/contributing_guide.html b/develop/development/contributing_guide.html
index 9aab3befe1..800aefdea3 100644
--- a/develop/development/contributing_guide.html
+++ b/develop/development/contributing_guide.html
@@ -464,9 +464,9 @@ contributions and would like to have you shouted out in the release notes!</p>
 <p>The security levels of Florbs are now validated when received
 via the <code>/federation/florb</code> endpoint. Contributed by Jane Matrix.</p>
 </blockquote>
-<p>If there are multiple pull requests involved in a single bugfix/feature/etc,
-then the content for each <code>changelog.d</code> file should be the same. Towncrier will
-merge the matching files together into a single changelog entry when we come to
+<p>If there are multiple pull requests involved in a single bugfix/feature/etc, then the
+content for each <code>changelog.d</code> file and file extension should be the same. Towncrier
+will merge the matching files together into a single changelog entry when we come to
 release.</p>
 <h3 id="how-do-i-know-what-to-call-the-changelog-file-before-i-create-the-pr"><a class="header" href="#how-do-i-know-what-to-call-the-changelog-file-before-i-create-the-pr">How do I know what to call the changelog file before I create the PR?</a></h3>
 <p>Obviously, you don't know if you should call your newsfile