diff --git a/imap-core/lib/imap-command.js b/imap-core/lib/imap-command.js
index 96515561..1da07997 100644
--- a/imap-core/lib/imap-command.js
+++ b/imap-core/lib/imap-command.js
@@ -393,7 +393,7 @@ class IMAPCommand {
     countBadResponses() {
         this.connection._badCount++;
         if (this.connection._badCount > MAX_BAD_COMMANDS) {
-            this.clearNotificationListener();
+            this.connection.clearNotificationListener();
             this.connection.send('* BYE Too many protocol errors');
             setImmediate(() => this.connection.close(true));
             return false;