diff --git a/ext/bg/js/clipboard-monitor.js b/ext/bg/js/clipboard-monitor.js
index 579cdc56..b4a27fa2 100644
--- a/ext/bg/js/clipboard-monitor.js
+++ b/ext/bg/js/clipboard-monitor.js
@@ -30,6 +30,8 @@ class ClipboardMonitor {
     }
 
     start() {
+        this.stop();
+
         // The token below is used as a unique identifier to ensure that a new clipboard monitor
         // hasn't been started during the await call. The check below the await apiClipboardGet()
         // call will exit early if the reference has changed.