diff --git a/apps/tests/app/testRunnerPage.ts b/apps/tests/app/testRunnerPage.ts
index abf6b9df1..6984cddb0 100644
--- a/apps/tests/app/testRunnerPage.ts
+++ b/apps/tests/app/testRunnerPage.ts
@@ -4,7 +4,7 @@ import bm = require("ui/button");
 import listViewDef = require("ui/list-view");
 import trace = require("trace");
 trace.enable();
-trace.setCategories(trace.categories.Test);
+trace.setCategories(trace.categories.Test + "," + trace.categories.Error);
 
 export function createPage() {
     var data: string[] = [""];
diff --git a/apps/tests/ui/label/label-tests.ts b/apps/tests/ui/label/label-tests.ts
index 69b91d097..729ab7669 100644
--- a/apps/tests/ui/label/label-tests.ts
+++ b/apps/tests/ui/label/label-tests.ts
@@ -478,7 +478,7 @@ export var testLocalTextAlignmentFromCssWhenAddingCssFileAllSelectorsAreApplied
         view.id = "testLabel";
         var page = <page.Page>views[1];
         page.addCss("#testLabel { text-align: " + expectedTextAlignment + "; }");
-        page.addCssFile(fs.path.join(__dirname,"/label-tests.css"));
+        page.addCssFile(fs.path.join(__dirname, "label-tests.css"));
 
         var actualResult = view.style.textAlignment;
         // actual result is taken from #testLabel tag, because it has a greater priority (id vs type).
@@ -514,7 +514,7 @@ export var testErrorMessageWhenWrongCssIsAddedWithFile = function () {
         view.id = "testLabel";
         var page = <page.Page>views[1];
         errorMessage = undefined;
-        page.addCssFile(fs.path.join(__dirname, "/label-tests-wrong.css"));
+        page.addCssFile(fs.path.join(__dirname, "label-tests-wrong.css"));
 
         TKUnit.assertNotEqual(errorMessage, undefined);
     });