diff --git a/browser/base/content/test/general/browser.ini b/browser/base/content/test/general/browser.ini
index 23d3472dfdd..5a34e800996 100644
--- a/browser/base/content/test/general/browser.ini
+++ b/browser/base/content/test/general/browser.ini
@@ -165,7 +165,6 @@ skip-if = true # bug 428712
 [browser_bug424101.js]
 skip-if = e10s # Bug 1093155 - tries to use context menu from browser-chrome and gets in a mess when in e10s mode
 [browser_bug427559.js]
-skip-if = e10s # Bug 1102015 - "content window is focused - Got [object ChromeWindow], expected [object CPOW [object Window]]"
 [browser_bug431826.js]
 [browser_bug432599.js]
 [browser_bug435035.js]
diff --git a/browser/base/content/test/general/browser_bug427559.js b/browser/base/content/test/general/browser_bug427559.js
index 50993f9b981..718e9505fb8 100644
--- a/browser/base/content/test/general/browser_bug427559.js
+++ b/browser/base/content/test/general/browser_bug427559.js
@@ -15,25 +15,34 @@ function test() {
   waitForExplicitFinish();
 
   gBrowser.selectedTab = gBrowser.addTab();
+  var browser = gBrowser.selectedBrowser;
 
-  gBrowser.selectedBrowser.addEventListener("load", function () {
-    gBrowser.selectedBrowser.removeEventListener("load", arguments.callee, true);
-    setTimeout(function () {
+  browser.addEventListener("load", function () {
+    browser.removeEventListener("load", arguments.callee, true);
+    executeSoon(function () {
       var testPageWin = content;
 
+      is(browser.contentDocumentAsCPOW.activeElement.localName, "button", "button is focused");
+
+      addEventListener("focus", function focusedWindow(event) {
+        if (!String(event.target.location).startsWith("data:"))
+          return;
+
+        removeEventListener("focus", focusedWindow, true);
+
+        // Make sure focus is given to the window because the element is now gone
+        is(browser.contentDocumentAsCPOW.activeElement.localName, "body", "body is focused");
+
+        gBrowser.removeCurrentTab();
+        finish();
+      }, true);
+
       // The test page loaded, so open an empty tab, select it, then restore
       // the test tab. This causes the test page's focused element to be removed
       // from its document.
       gBrowser.selectedTab = gBrowser.addTab();
       gBrowser.removeCurrentTab();
-
-      // Make sure focus is given to the window because the element is now gone
-      is(document.commandDispatcher.focusedWindow, testPageWin,
-         "content window is focused");
-
-      gBrowser.removeCurrentTab();
-      finish();
-    }, 0);
+    });
   }, true);
 
   content.location = testPage;