diff --git a/mzta-background.js b/mzta-background.js
index 1b5d9bde..0d1f50c7 100644
--- a/mzta-background.js
+++ b/mzta-background.js
@@ -1251,9 +1251,4 @@ async function processEmails(messages, addTagsAuto, spamFilter) {
 
 
 
-try {
-    browser.messages.onNewMailReceived.addListener(newEmailListener, !prefs_init.add_tags_auto_only_inbox);
-} catch (e) {
-    taLog.log("Using browser.messages.onNewMailReceived.addListener with one agrument for Thunderbird 115.");
-    browser.messages.onNewMailReceived.addListener(newEmailListener);
-}
+browser.messages.onNewMailReceived.addListener(newEmailListener, !prefs_init.add_tags_auto_only_inbox);
\ No newline at end of file