diff --git a/browser/base/content/macBrowserOverlay.xul b/browser/base/content/macBrowserOverlay.xul
index 94214126da2d..2afc6fdbeb98 100644
--- a/browser/base/content/macBrowserOverlay.xul
+++ b/browser/base/content/macBrowserOverlay.xul
@@ -26,8 +26,8 @@
 #include global-scripts.inc
 
 <script type="application/javascript">
-  function OpenBrowserWindowFromDockMenu() {
-    let win = OpenBrowserWindow();
+  function OpenBrowserWindowFromDockMenu(options) {
+    let win = OpenBrowserWindow(options);
     win.addEventListener("load", function listener() {
       win.removeEventListener("load", listener);
       let dockSupport = Cc["@mozilla.org/widget/macdocksupport;1"]
@@ -56,6 +56,9 @@
     <!-- The command cannot be cmd_newNavigator because we need to activate
          the application. -->
     <menuitem label="&newNavigatorCmd.label;" oncommand="OpenBrowserWindowFromDockMenu();" />
+#ifdef MOZ_PER_WINDOW_PRIVATE_BROWSING
+    <menuitem label="&newPrivateWindow.label;" oncommand="OpenBrowserWindowFromDockMenu({private: true});" />
+#endif
   </menupopup>
 </popupset>
 
diff --git a/browser/components/privatebrowsing/test/browser/perwindow/browser_privatebrowsing_openlocation.js b/browser/components/privatebrowsing/test/browser/perwindow/browser_privatebrowsing_openlocation.js
index 78a00df7fff7..0707004ba96d 100644
--- a/browser/components/privatebrowsing/test/browser/perwindow/browser_privatebrowsing_openlocation.js
+++ b/browser/components/privatebrowsing/test/browser/perwindow/browser_privatebrowsing_openlocation.js
@@ -19,10 +19,13 @@ function test() {
 
             let browser = aWindow.gBrowser.selectedBrowser;
             browser.addEventListener("load", function() {
+              // Ignore non-related loads (could be about:privatebrowsing for example, see bug 817932)
+              if (browser.currentURI.spec != url) {
+                return;
+              }
+
               browser.removeEventListener("load", arguments.callee, true);
 
-              is(browser.currentURI.spec, url,
-                 "The correct URL should be loaded via the open location dialog");
               executeSoon(callback);
             }, true);
 
diff --git a/browser/components/sessionstore/src/SessionStore.jsm b/browser/components/sessionstore/src/SessionStore.jsm
index ff9e31d690d6..fe1570686331 100644
--- a/browser/components/sessionstore/src/SessionStore.jsm
+++ b/browser/components/sessionstore/src/SessionStore.jsm
@@ -886,9 +886,16 @@ let SessionStoreInternal = {
       winData._shouldRestore = true;
 #endif
 
+#ifdef MOZ_PER_WINDOW_PRIVATE_BROWSING
+      // Save the window if it has multiple tabs or a single saveable tab and
+      // it's not private.
+      if (!winData.isPrivate && (winData.tabs.length > 1 ||
+          (winData.tabs.length == 1 && this._shouldSaveTabState(winData.tabs[0])))) {
+#else
       // save the window if it has multiple tabs or a single saveable tab
       if (winData.tabs.length > 1 ||
           (winData.tabs.length == 1 && this._shouldSaveTabState(winData.tabs[0]))) {
+#endif
         // we don't want to save the busy state
         delete winData.busy;
 
diff --git a/browser/components/sessionstore/test/Makefile.in b/browser/components/sessionstore/test/Makefile.in
index 965468fff0d5..641fcd479192 100644
--- a/browser/components/sessionstore/test/Makefile.in
+++ b/browser/components/sessionstore/test/Makefile.in
@@ -36,7 +36,6 @@ MOCHITEST_BROWSER_FILES = \
 	browser_394759_basic.js \
 	browser_394759_behavior.js \
 	browser_394759_purge.js \
-	browser_394759_privatebrowsing.js \
 	browser_408470.js \
 	browser_408470_sample.html \
 	browser_423132.js \
@@ -139,10 +138,12 @@ MOCHITEST_BROWSER_FILES = \
 ifdef MOZ_PER_WINDOW_PRIVATE_BROWSING
 MOCHITEST_BROWSER_FILES += \
 	browser_354894_perwindowpb.js \
+	browser_394759_perwindowpb.js \
 	$(NULL)
 else
 MOCHITEST_BROWSER_FILES += \
 	browser_354894.js \
+	browser_394759_privatebrowsing.js \
 	$(NULL)
 endif
 
diff --git a/browser/components/sessionstore/test/browser_394759_perwindowpb.js b/browser/components/sessionstore/test/browser_394759_perwindowpb.js
new file mode 100644
index 000000000000..e16427f4e4b1
--- /dev/null
+++ b/browser/components/sessionstore/test/browser_394759_perwindowpb.js
@@ -0,0 +1,119 @@
+/* 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/. */
+
+/** Private Browsing Test for Bug 394759 **/
+function test() {
+  waitForExplicitFinish();
+
+  let windowsToClose = [];
+  let closedWindowCount = 0;
+  // Prevent VM timers issues, cache now and increment it manually.
+  let now = Date.now();
+  const TESTS = [
+    { url: "about:config",
+      key: "bug 394759 Non-PB",
+      value: "uniq" + (++now) },
+    { url: "about:mozilla",
+      key: "bug 394759 PB",
+      value: "uniq" + (++now) },
+  ];
+
+  registerCleanupFunction(function() {
+    Services.prefs.clearUserPref("browser.sessionstore.interval");
+    windowsToClose.forEach(function(win) {
+      win.close();
+    });
+  });
+
+  function testOpenCloseWindow(aIsPrivate, aTest, aCallback) {
+    whenNewWindowLoaded(aIsPrivate, function(win) {
+      win.gBrowser.selectedBrowser.addEventListener("load", function onLoad() {
+        win.gBrowser.selectedBrowser.removeEventListener("load", onLoad, true);
+        executeSoon(function() {
+          // Mark the window with some unique data to be restored later on.
+          ss.setWindowValue(win, aTest.key, aTest.value);
+          // Close.
+          win.close();
+          aCallback();
+        });
+      }, true);
+      win.gBrowser.selectedBrowser.loadURI(aTest.url);
+    });
+  }
+
+  function testOnWindow(aIsPrivate, aValue, aCallback) {
+    whenNewWindowLoaded(aIsPrivate, function(win) {
+      windowsToClose.push(win);
+      executeSoon(function() checkClosedWindows(aIsPrivate, aValue, aCallback));
+    });
+  }
+
+  function checkClosedWindows(aIsPrivate, aValue, aCallback) {
+    let data = JSON.parse(ss.getClosedWindowData())[0];
+    is(ss.getClosedWindowCount(), 1, "Check the closed window count");
+    ok(JSON.stringify(data).indexOf(aValue) > -1,
+       "Check the closed window data was stored correctly");
+    aCallback();
+  }
+
+  function setupBlankState(aCallback) {
+    // Set interval to a large time so state won't be written while we setup
+    // environment.
+    Services.prefs.setIntPref("browser.sessionstore.interval", 100000);
+
+    // Set up the browser in a blank state. Popup windows in previous tests
+    // result in different states on different platforms.
+    let blankState = JSON.stringify({
+      windows: [{
+        tabs: [{ entries: [{ url: "about:blank" }] }],
+        _closedTabs: []
+      }],
+      _closedWindows: []
+    });
+    ss.setBrowserState(blankState);
+
+    // Wait for the sessionstore.js file to be written before going on.
+    // Note: we don't wait for the complete event, since if asyncCopy fails we
+    // would timeout.
+    Services.obs.addObserver(function (aSubject, aTopic, aData) {
+      Services.obs.removeObserver(arguments.callee, aTopic);
+      info("sessionstore.js is being written");
+
+      closedWindowCount = ss.getClosedWindowCount();
+      is(closedWindowCount, 0, "Correctly set window count");
+
+      executeSoon(aCallback);
+    }, "sessionstore-state-write", false);
+
+    // Remove the sessionstore.js file before setting the interval to 0
+    let profilePath = Services.dirsvc.get("ProfD", Ci.nsIFile);
+    let sessionStoreJS = profilePath.clone();
+    sessionStoreJS.append("sessionstore.js");
+    if (sessionStoreJS.exists())
+      sessionStoreJS.remove(false);
+    info("sessionstore.js was correctly removed: " + (!sessionStoreJS.exists()));
+
+    // Make sure that sessionstore.js can be forced to be created by setting
+    // the interval pref to 0.
+    Services.prefs.setIntPref("browser.sessionstore.interval", 0);
+  }
+
+  setupBlankState(function() {
+    testOpenCloseWindow(false, TESTS[0], function() {
+      testOpenCloseWindow(true, TESTS[1], function() {
+        testOnWindow(false, TESTS[0].value, function() {
+          testOnWindow(true, TESTS[0].value, finish);
+        });
+      });
+    });
+  });
+}
+
+function whenNewWindowLoaded(aIsPrivate, aCallback) {
+  let win = OpenBrowserWindow({private: aIsPrivate});
+  win.addEventListener("load", function onLoad() {
+    win.removeEventListener("load", onLoad, false);
+    aCallback(win);
+  }, false);
+}