diff --git a/accessible/tests/mochitest/events/docload_wnd.xul b/accessible/tests/mochitest/events/docload_wnd.xul
index 035f3fa56ed8..06402e8e987b 100644
--- a/accessible/tests/mochitest/events/docload_wnd.xul
+++ b/accessible/tests/mochitest/events/docload_wnd.xul
@@ -226,7 +226,7 @@
       gTabBrowser = document.getElementById("content");
 
       gQueue = new gOpenerWnd.eventQueue();
-      gQueue.push(new loadURIInvoker("about:robots"));
+      gQueue.push(new loadURIInvoker("about:"));
       gQueue.push(new clickReloadBtnInvoker());
       gQueue.push(new loadURIInvoker("about:mozilla"));
       gQueue.push(new reloadInvoker());
diff --git a/accessible/tests/mochitest/name/nsRootAcc_wnd.xul b/accessible/tests/mochitest/name/nsRootAcc_wnd.xul
index e530726aa4de..0630234cce92 100644
--- a/accessible/tests/mochitest/name/nsRootAcc_wnd.xul
+++ b/accessible/tests/mochitest/name/nsRootAcc_wnd.xul
@@ -88,7 +88,7 @@
     function doTest()
     {
       var tabBrowser = document.getElementById("content");
-      tabBrowser.loadURI("about:robots");
+      tabBrowser.loadURI("about:");
       tabBrowser.addTab("about:mozilla");
 
       gQueue = new gOpenerWnd.eventQueue();
diff --git a/accessible/tests/mochitest/name/test_nsRootAcc.xul b/accessible/tests/mochitest/name/test_nsRootAcc.xul
index 511263a95bd1..fd1fc7d3b344 100644
--- a/accessible/tests/mochitest/name/test_nsRootAcc.xul
+++ b/accessible/tests/mochitest/name/test_nsRootAcc.xul
@@ -26,12 +26,12 @@
 
     function doTest()
     {
-      // Actually, just disable this test everywhere -- bug 586818.
+      todo(false, "Disabled test. (Bug 586818)");
       SimpleTest.finish();
       return;
 
       if (LINUX) {
-        todo(false, "Enable test on Linux - see bug 525175.");
+        todo(false, "Skip test on Linux. (Bug 525175)");
         SimpleTest.finish();
         return;
       }