--- a/devtools/client/webconsole/test/browser_webconsole_netlogging.js
+++ b/devtools/client/webconsole/test/browser_webconsole_netlogging.js
@@ -80,18 +80,22 @@ add_task(function* testXhrPost() {
 
   is(request.request.method, "POST", "Method is correct");
   is(postData.postData.text, "Hello world!", "Request body was logged");
   is(responseContent.content.text, TEST_DATA_JSON_CONTENT,
     "Response is correct");
 });
 
 add_task(function* testFormSubmission() {
+  let pageLoadRequestFinished = waitForFinishedRequest(PAGE_REQUEST_PREDICATE);
   let hud = yield loadPageAndGetHud(TEST_NETWORK_REQUEST_URI);
 
+  info("Waiting for the page load to be finished.")
+  yield pageLoadRequestFinished;
+
   // The form POSTs to the page URL but over https (page over http).
   let finishedRequest = waitForFinishedRequest(PAGE_REQUEST_PREDICATE);
   ContentTask.spawn(gBrowser.selectedBrowser, { }, `function()
   {
     let form = content.document.querySelector("form");
     form.submit();
   }`);
   let request = yield finishedRequest;