diff --git a/app/assets/prefs.js b/app/assets/prefs.js
index bf137177d2..bcd6095531 100644
--- a/app/assets/prefs.js
+++ b/app/assets/prefs.js
@@ -10,9 +10,6 @@ pref("network.prefetch-next", false);
 // Let operations run as long as necessary
 pref("dom.max_chrome_script_run_time", 0);
 
-// .dotm Word plugin VBA uses this to find the running Zotero instance
-pref("ui.window_class_override", "ZoteroWindowClass");
-
 pref("intl.locale.requested", '');
 pref("intl.regional_prefs.use_os_locales", false);
 
diff --git a/app/modules/zotero-word-for-windows-integration b/app/modules/zotero-word-for-windows-integration
index 9ce2a32f2c..b454ca01b7 160000
--- a/app/modules/zotero-word-for-windows-integration
+++ b/app/modules/zotero-word-for-windows-integration
@@ -1 +1 @@
-Subproject commit 9ce2a32f2cc6b2f387524bb23dc6a25d584d7c28
+Subproject commit b454ca01b7a9f1a5f2804faeb2abb30a01fa291c