diff --git a/browser/components/privatebrowsing/test/browser/browser.ini b/browser/components/privatebrowsing/test/browser/browser.ini
index d0ee64575c9b..18bc27fafad3 100644
--- a/browser/components/privatebrowsing/test/browser/browser.ini
+++ b/browser/components/privatebrowsing/test/browser/browser.ini
@@ -17,9 +17,6 @@ support-files =
 
 [browser_privatebrowsing_DownloadLastDirWithCPS.js]
 [browser_privatebrowsing_aboutHomeButtonAfterWindowClose.js]
-skip-if = true # Bug 1142678 - Loading a message sending frame script into a private about:home tab causes leaks
-[browser_privatebrowsing_aboutHomeButtonAfterWindowClose_old.js]
-skip-if = e10s
 [browser_privatebrowsing_aboutSessionRestore.js]
 [browser_privatebrowsing_cache.js]
 [browser_privatebrowsing_certexceptionsui.js]
diff --git a/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_aboutHomeButtonAfterWindowClose_old.js b/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_aboutHomeButtonAfterWindowClose_old.js
deleted file mode 100644
index dc61c1e00191..000000000000
--- a/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_aboutHomeButtonAfterWindowClose_old.js
+++ /dev/null
@@ -1,50 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This test checks that the Session Restore about:home button
-// is disabled in private mode
-
-function test() {
-  waitForExplicitFinish();
-
-  function testNoSessionRestoreButton() {
-    let win = OpenBrowserWindow({private: true});
-    win.addEventListener("load", function onLoad() {
-      win.removeEventListener("load", onLoad, false);
-      executeSoon(function() {
-        info("The second private window got loaded");
-        let newTab = win.gBrowser.addTab();
-        win.gBrowser.selectedTab = newTab;
-        let tabBrowser = win.gBrowser.getBrowserForTab(newTab);
-        tabBrowser.addEventListener("load", function tabLoadListener() {
-          if (win.content.location != "about:home") {
-            win.content.location = "about:home";
-            return;
-          }
-          tabBrowser.removeEventListener("load", tabLoadListener, true);
-          executeSoon(function() {
-            info("about:home got loaded");
-            let sessionRestoreButton = win.gBrowser
-                                          .contentDocument
-                                          .getElementById("restorePreviousSession");
-            is(win.getComputedStyle(sessionRestoreButton).display, 
-               "none", "The Session Restore about:home button should be disabled");
-            win.close();
-            finish();
-          });
-        }, true);
-      });
-    }, false);
-  }
-
-  let win = OpenBrowserWindow({private: true});
-  win.addEventListener("load", function onload() {
-    win.removeEventListener("load", onload, false);
-    executeSoon(function() {
-      info("The first private window got loaded");
-      win.close();
-      testNoSessionRestoreButton();
-    });
-  }, false);
-}