diff --git a/browser/base/content/browser-menubar.inc b/browser/base/content/browser-menubar.inc
index 0245d27a7288..c99164f81074 100644
--- a/browser/base/content/browser-menubar.inc
+++ b/browser/base/content/browser-menubar.inc
@@ -401,7 +401,7 @@
               <menu id="browserToolsMenu" data-l10n-id="menu-tools-browser-tools">
                 <menupopup id="menuWebDeveloperPopup">
                   <menuitem id="menu_taskManager"
-                            oncommand="switchToTabHavingURI('about:performance', true)"
+                            oncommand="switchToTabHavingURI('about:processes', true)"
                             data-l10n-id="menu-tools-task-manager"/>
                   <menuitem id="menu_pageSource"
                             key="key_viewSource"
diff --git a/toolkit/content/aboutSupport.xhtml b/toolkit/content/aboutSupport.xhtml
index 11682f036338..17095877ca4b 100644
--- a/toolkit/content/aboutSupport.xhtml
+++ b/toolkit/content/aboutSupport.xhtml
@@ -198,7 +198,7 @@
             <th class="column" data-l10n-id="app-basics-performance"/>
 
             <td>
-              <a href="about:performance">about:performance</a>
+              <a href="about:processes">about:processes</a>
             </td>
           </tr>