--- a/devtools/client/netmonitor/test/browser_net_simple-request-data.js
+++ b/devtools/client/netmonitor/test/browser_net_simple-request-data.js
@@ -272,17 +272,17 @@ function test() {
         document,
         getDisplayedRequests(store.getState()),
         requestItem,
         "GET",
         SIMPLE_SJS,
         {
           type: "plain",
           fullMimeType: "text/plain; charset=utf-8",
-          transferred: L10N.getFormatStrWithNumbers("networkMenu.sizeB", 342),
+          transferred: L10N.getFormatStrWithNumbers("networkMenu.sizeB", 347),
           size: L10N.getFormatStrWithNumbers("networkMenu.sizeB", 12),
         }
       );
     });
 
     expectEvent(EVENTS.UPDATING_EVENT_TIMINGS, async () => {
       await waitUntil(() => {
         let requestItem = getSortedRequests(store.getState()).get(0);