diff --git a/toolkit/mozapps/extensions/content/extensions.js b/toolkit/mozapps/extensions/content/extensions.js
index 2892b61f6411..288f3f972d35 100644
--- a/toolkit/mozapps/extensions/content/extensions.js
+++ b/toolkit/mozapps/extensions/content/extensions.js
@@ -51,7 +51,7 @@ const UPDATES_RELEASENOTES_TRANSFORMFILE = "chrome://mozapps/content/extensions/
 
 const XMLURI_PARSE_ERROR = "http://www.mozilla.org/newlayout/xml/parsererror.xml"
 
-const VIEW_DEFAULT = "addons://discover/";
+var gViewDefault = "addons://discover/";
 
 var gStrings = {};
 XPCOMUtils.defineLazyServiceGetter(gStrings, "bundleSvc",
@@ -124,6 +124,10 @@ function initialize(event) {
     gHeader.onKeyPress(event);
   });
 
+  if (!isDiscoverEnabled()) {
+    gViewDefault = "addons://list/extension";
+  }
+
   gViewController.initialize();
   gCategories.initialize();
   gHeader.initialize();
@@ -641,12 +645,12 @@ var gViewController = {
         if (gHistory.canGoBack)
           gHistory.back();
         else
-          gViewController.replaceView(VIEW_DEFAULT);
+          gViewController.replaceView(gViewDefault);
       } else {
         if (gHistory.canGoForward)
           gHistory.forward();
         else
-          gViewController.replaceView(VIEW_DEFAULT);
+          gViewController.replaceView(gViewDefault);
       }
     }
   },
@@ -1673,7 +1677,7 @@ var gCategories = {
     // then the list will default to selecting the search category and we never
     // want to show that as the first view so switch to the default category
     if (!this.node.selectedItem || this.node.selectedItem == this._search)
-      this.node.value = VIEW_DEFAULT;
+      this.node.value = gViewDefault;
 
     var self = this;
     this.node.addEventListener("select", function node_onSelected() {
@@ -1741,7 +1745,7 @@ var gCategories = {
 
     // If this category is currently selected then switch to the default view
     if (this.node.selectedItem == category)
-      gViewController.replaceView(VIEW_DEFAULT);
+      gViewController.replaceView(gViewDefault);
 
     this.node.removeChild(category);
   },
@@ -1772,7 +1776,7 @@ var gCategories = {
 
         // Don't load view that is becoming hidden
         if (hidden && aViewId == gViewController.currentViewId)
-          gViewController.loadView(VIEW_DEFAULT);
+          gViewController.loadView(gViewDefault);
 
         item.hidden = hidden;
         Services.prefs.setBoolPref(prefName, hidden);
@@ -3011,7 +3015,7 @@ var gDetailView = {
         // This might happen due to session restore restoring us back to an
         // add-on that doesn't exist but otherwise shouldn't normally happen.
         // Either way just revert to the default view.
-        gViewController.replaceView(VIEW_DEFAULT);
+        gViewController.replaceView(gViewDefault);
       });
     });
   },
diff --git a/toolkit/mozapps/extensions/test/browser/browser_discovery.js b/toolkit/mozapps/extensions/test/browser/browser_discovery.js
index b19219ed072e..70793f739ab0 100644
--- a/toolkit/mozapps/extensions/test/browser/browser_discovery.js
+++ b/toolkit/mozapps/extensions/test/browser/browser_discovery.js
@@ -620,3 +620,18 @@ add_test(function() {
   Services.prefs.setBoolPref(PREF_XPI_ENABLED, true);
   bug_601442_test_elements(true);
 });
+
+// Test for Bug 1132971 - if extensions.getAddons.showPane is false,
+// the extensions pane should show by default
+add_test(function() {
+  Services.prefs.clearUserPref(PREF_UI_LASTCATEGORY);
+  Services.prefs.setBoolPref(PREF_DISCOVER_ENABLED, false);
+
+  open_manager(null, function(aWindow) {
+    gManagerWindow = aWindow;
+    gCategoryUtilities = new CategoryUtilities(gManagerWindow);
+    is(gCategoryUtilities.selectedCategory, "extension", "Should be showing the extension view");
+    close_manager(gManagerWindow, run_next_test);
+    Services.prefs.clearUserPref(PREF_DISCOVER_ENABLED);
+  });
+});
diff --git a/toolkit/mozapps/extensions/test/browser/head.js b/toolkit/mozapps/extensions/test/browser/head.js
index 0fc9f4310cd7..c0c2205fc271 100644
--- a/toolkit/mozapps/extensions/test/browser/head.js
+++ b/toolkit/mozapps/extensions/test/browser/head.js
@@ -33,6 +33,7 @@ const PREF_XPI_ENABLED = "xpinstall.enabled";
 const PREF_UPDATEURL = "extensions.update.url";
 const PREF_GETADDONS_CACHE_ENABLED = "extensions.getAddons.cache.enabled";
 const PREF_CUSTOM_XPINSTALL_CONFIRMATION_UI = "xpinstall.customConfirmationUI";
+const PREF_UI_LASTCATEGORY = "extensions.ui.lastCategory";
 
 const MANAGER_URI = "about:addons";
 const INSTALL_URI = "chrome://mozapps/content/xpinstall/xpinstallConfirm.xul";