diff --git a/chrome/content/scaffold/scaffold.xhtml b/chrome/content/scaffold/scaffold.xhtml
index 2e6ca2f70f..519e65914f 100644
--- a/chrome/content/scaffold/scaffold.xhtml
+++ b/chrome/content/scaffold/scaffold.xhtml
@@ -43,6 +43,7 @@
title="Scaffold"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
xmlns:html="http://www.w3.org/1999/xhtml"
+ windowtype="zotero:scaffold"
style="display: flex;"
drawintitlebar-platforms="win, linux">
diff --git a/chrome/content/zotero/runJS.html b/chrome/content/zotero/runJS.html
index dce469c89a..509e279c08 100644
--- a/chrome/content/zotero/runJS.html
+++ b/chrome/content/zotero/runJS.html
@@ -1,4 +1,4 @@
-
+
diff --git a/chrome/content/zotero/tools/csledit.xhtml b/chrome/content/zotero/tools/csledit.xhtml
index e9e1fb765f..91d168c552 100644
--- a/chrome/content/zotero/tools/csledit.xhtml
+++ b/chrome/content/zotero/tools/csledit.xhtml
@@ -35,6 +35,7 @@
id="csl-edit"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
xmlns:html="http://www.w3.org/1999/xhtml"
+ windowtype="zotero:style-editor"
onload="Zotero_CSL_Editor.init();"
title="&styles.editor;">