1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/printing/tests/file_window_print_reentrant.html b/toolkit/components/printing/tests/file_window_print_reentrant.html
index 7eebd8c2fe..2008ffaf27 100644
--- a/toolkit/components/printing/tests/file_window_print_reentrant.html
+++ b/toolkit/components/printing/tests/file_window_print_reentrant.html
@@ -3,7 +3,7 @@
 <script>
 let count = 0;
 onload = function() {
-  window.addEventListener('beforeprint', (event) => {
+  window.addEventListener('beforeprint', () => {
     document.getElementById("before-print-count").innerText = ++count;
     print()
   });