diff --git a/toolkit/mozapps/downloads/content/downloads.js b/toolkit/mozapps/downloads/content/downloads.js
index 7177fab5190..04d42181f7a 100644
--- a/toolkit/mozapps/downloads/content/downloads.js
+++ b/toolkit/mozapps/downloads/content/downloads.js
@@ -436,8 +436,10 @@ function Startup()
   let obs = Cc["@mozilla.org/observer-service;1"].
             getService(Ci.nsIObserverService);
   obs.addObserver(gDownloadObserver, "download-manager-remove-download", false);
+#ifndef MOZ_PER_WINDOW_PRIVATE_BROWSING
   obs.addObserver(gDownloadObserver, "private-browsing", false);
   obs.addObserver(gDownloadObserver, "private-browsing-change-granted", false);
+#endif
   obs.addObserver(gDownloadObserver, "browser-lastwindow-close-granted", false);
 
   // Clear the search box and move focus to the list on escape from the box
@@ -462,8 +464,10 @@ function Shutdown()
 
   let obs = Cc["@mozilla.org/observer-service;1"].
             getService(Ci.nsIObserverService);
+#ifndef MOZ_PER_WINDOW_PRIVATE_BROWSING
   obs.removeObserver(gDownloadObserver, "private-browsing");
   obs.removeObserver(gDownloadObserver, "private-browsing-change-granted");
+#endif
   obs.removeObserver(gDownloadObserver, "download-manager-remove-download");
   obs.removeObserver(gDownloadObserver, "browser-lastwindow-close-granted");
 
@@ -488,6 +492,7 @@ let gDownloadObserver = {
         let dl = getDownload(id.data);
         removeFromView(dl);
         break;
+#ifndef MOZ_PER_WINDOW_PRIVATE_BROWSING
       case "private-browsing-change-granted":
         // Finalize our statements cause the connection will be closed by the
         // service during the private browsing transition.
@@ -515,6 +520,7 @@ let gDownloadObserver = {
           }, 0);
         }
         break;
+#endif
       case "browser-lastwindow-close-granted":
 #ifndef XP_MACOSX
         if (gDownloadManager.activeDownloadCount == 0) {
@@ -1346,10 +1352,12 @@ function getDownload(aID)
 
 /**
  * Initialize the statement which is used to retrieve the list of downloads.
+#ifndef MOZ_PER_WINDOW_PRIVATE_BROWSING
  *
  * This function gets called both at startup, and when entering the private
  * browsing mode (because the database connection is changed when entering
  * the private browsing mode, and a new statement should be initialized.
+#endif
  */
 function initStatement()
 {
diff --git a/toolkit/mozapps/downloads/content/downloads.xul b/toolkit/mozapps/downloads/content/downloads.xul
index 0745b16e4ee..e4314a565f8 100644
--- a/toolkit/mozapps/downloads/content/downloads.xul
+++ b/toolkit/mozapps/downloads/content/downloads.xul
@@ -25,7 +25,10 @@
 <window xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         id="downloadManager" windowtype="Download:Manager"
-        orient="vertical" title="&downloads.title;" statictitle="&downloads.title;"
+        orient="vertical" title="&downloads.title;"
+#ifndef MOZ_PER_WINDOW_PRIVATE_BROWSING
+        statictitle="&downloads.title;"
+#endif
         width="&window.width2;" height="&window.height;" screenX="10" screenY="10"
         persist="width height screenX screenY sizemode"
         onload="Startup();" onunload="Shutdown();"
diff --git a/toolkit/mozapps/downloads/tests/chrome/Makefile.in b/toolkit/mozapps/downloads/tests/chrome/Makefile.in
index e0a1202442c..ebb232444a4 100644
--- a/toolkit/mozapps/downloads/tests/chrome/Makefile.in
+++ b/toolkit/mozapps/downloads/tests/chrome/Makefile.in
@@ -30,7 +30,6 @@ MOCHITEST_CHROME_FILES = \
   test_search_keys.xul \
   test_select_all.xul \
   test_space_key_pauses_resumes.xul \
-  test_privatebrowsing_title.xul \
   test_ui_stays_open_on_alert_clickback.xul \
   test_unknownContentType_dialog_layout.xul \
   test_bug_412360.xul \
@@ -56,4 +55,10 @@ MOCHITEST_CHROME_FILES += \
   $(NULL)
 endif
 
+ifndef MOZ_PER_WINDOW_PRIVATE_BROWSING
+MOCHITEST_CHROME_FILES += \
+  test_privatebrowsing_title.xul \
+  $(NULL)
+endif
+
 include $(topsrcdir)/config/rules.mk