diff --git a/html/changelog.html b/html/changelog.html
index 50a04c91fde..736b978467a 100644
--- a/html/changelog.html
+++ b/html/changelog.html
@@ -36,6 +36,10 @@
 		<div class="commit sansserif">
 
 			<h2 class="date">19 June 2022</h2>
+			<h3 class="author">JohnWildkins updated:</h3>
+			<ul class="changes bgimages16">
+				<li class="bugfix">Fix heat exchangers not radiating properly on open space turfs (as opposed to space turfs). This should stop the supermatter delaminating on nominally &quot;safe&quot; setups.</li>
+			</ul>
 			<h3 class="author">MattAtlas updated:</h3>
 			<ul class="changes bgimages16">
 				<li class="bugfix">Fixes flashes not working correctly in many cases.</li>
diff --git a/html/changelogs/.all_changelog.yml b/html/changelogs/.all_changelog.yml
index c8a67c9ee16..b204a30c394 100644
--- a/html/changelogs/.all_changelog.yml
+++ b/html/changelogs/.all_changelog.yml
@@ -24903,5 +24903,9 @@ DO NOT EDIT THIS FILE BY HAND!  AUTOMATICALLY GENERATED BY ss13_genchangelog.py.
       them.
   - rscadd: Updates the Orion Trail and Battler arcade UIs.
 2022-06-19:
+  JohnWildkins:
+  - bugfix: Fix heat exchangers not radiating properly on open space turfs (as opposed
+      to space turfs). This should stop the supermatter delaminating on nominally
+      &quot;safe&quot; setups.
   MattAtlas:
   - bugfix: Fixes flashes not working correctly in many cases.
diff --git a/html/changelogs/johnwildkins-fixsupermatter.yml b/html/changelogs/johnwildkins-fixsupermatter.yml
deleted file mode 100644
index 6b2cde5abd0..00000000000
--- a/html/changelogs/johnwildkins-fixsupermatter.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-author: JohnWildkins
-
-delete-after: True
-
-changes:
-  - bugfix: "Fix heat exchangers not radiating properly on open space turfs (as opposed to space turfs). This should stop the supermatter delaminating on nominally \"safe\" setups."