diff --git a/platform/common/vapi-background.js b/platform/common/vapi-background.js
index 283ffe6ef..26507982a 100644
--- a/platform/common/vapi-background.js
+++ b/platform/common/vapi-background.js
@@ -958,6 +958,7 @@ vAPI.messaging = {
 
     onPortDisconnect: function(port) {
         this.ports.delete(port.name);
+        void browser.runtime.lastError;
     },
 
     // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/Port