diff --git a/src/index.html b/src/index.html
index 3ebce95..446ff39 100644
--- a/src/index.html
+++ b/src/index.html
@@ -202,6 +202,6 @@
 		</div>
 		<script src="/js/vendor/jquery.min.js"></script>
 		<script src="/js/vendor/bootstrap.min.js"></script>
-		<script src="/js/connectivity.js?v=4"></script>
+		<script src="/js/connectivity.js?v=5"></script>
 	</body>
 </html>
\ No newline at end of file
diff --git a/src/js/connectivity.js b/src/js/connectivity.js
index 31add85..73425ed 100644
--- a/src/js/connectivity.js
+++ b/src/js/connectivity.js
@@ -131,7 +131,12 @@ function test_browser() {
 					if (fb_time > 1000) {
 						lclass = "warning";
 					}
-					$p.find(".browser_fallback").html("<span class='label label-" + lclass + "'>to IPv" + resp2.protocol + " in " + label + "</span>");
+					if (resp.protocol == resp2.protocol) {
+						$p.find(".browser_fallback").html("<span class='label label-danger'>Browser error, see <a href='https://bugzilla.mozilla.org/show_bug.cgi?id=1709564'>this bug</a></span>");
+					}
+					else {
+						$p.find(".browser_fallback").html("<span class='label label-" + lclass + "'>to IPv" + resp2.protocol + " in " + label + "</span>");
+					}
 				},
 				error: function(xopt, err) {
 					$p.find(".browser_fallback").html("<span class='label label-danger'>No</span>");