diff --git a/dom/media/tests/mochitest/test_peerConnection_simulcastOffer.html b/dom/media/tests/mochitest/test_peerConnection_simulcastOffer.html
index 9ff8b91ee2ec..e9d5a48d74cf 100644
--- a/dom/media/tests/mochitest/test_peerConnection_simulcastOffer.html
+++ b/dom/media/tests/mochitest/test_peerConnection_simulcastOffer.html
@@ -86,8 +86,8 @@
           ok(vremote, "Should have remote video element for pcRemote");
           ok(vlocal.videoWidth > 0, "source width is positive");
           ok(vlocal.videoHeight > 0, "source height is positive");
-          is(vremote.videoWidth, vlocal.videoWidth / 2, "sink is same width as source");
-          is(vremote.videoHeight, vlocal.videoHeight / 2, "sink is same height as source");
+          is(vremote.videoWidth, vlocal.videoWidth, "sink is same width as source");
+          is(vremote.videoHeight, vlocal.videoHeight, "sink is same height as source");
         },
         function PC_REMOTE_SET_RTP_SECOND_RID(test) {
           // Now, cause pcRemote to filter out everything but the second SSRC.
@@ -97,6 +97,18 @@
         function PC_REMOTE_WAIT_FOR_SECOND_MEDIA_FLOW(test) {
           return test.pcRemote.waitForMediaFlow();
         },
+        function PC_REMOTE_WAIT_FOR_FRAMES_2() {
+          var vremote = test.pcRemote.remoteMediaElements[0];
+          ok(vremote, "Should have remote video element for pcRemote");
+          return helper.waitForFrames(vremote);
+        },
+        // For some reason, even though we're getting a 25x25 stream, sometimes
+        // the resolution isn't updated on the video element on the first frame.
+        function PC_REMOTE_WAIT_FOR_FRAMES_3() {
+          var vremote = test.pcRemote.remoteMediaElements[0];
+          ok(vremote, "Should have remote video element for pcRemote");
+          return helper.waitForFrames(vremote);
+        },
         function PC_REMOTE_CHECK_SIZE_2() {
           var vlocal = test.pcLocal.localMediaElements[0];
           var vremote = test.pcRemote.remoteMediaElements[0];