1 files changed, 1 insertions, 1 deletions
diff --git a/devtools/client/netmonitor/test/html_custom-get-page.html b/devtools/client/netmonitor/test/html_custom-get-page.html
index b44bf754a4..db4e45e81c 100644
--- a/devtools/client/netmonitor/test/html_custom-get-page.html
+++ b/devtools/client/netmonitor/test/html_custom-get-page.html
@@ -45,7 +45,7 @@
 
       // For testing the offline mode in the netmonitor
       let isOfflineEventFired = false;
-      window.addEventListener("offline", (event) => {
+      window.addEventListener("offline", () => {
         isOfflineEventFired = true
       }, { once: true });