--- a/mobile/app/mobile.js
+++ b/mobile/app/mobile.js
@@ -178,20 +178,16 @@ pref("formhelper.autozoom.caret", true);
 pref("formhelper.restore", false);
 
 /* find helper */
 pref("findhelper.autozoom", true);
 
 /* autocomplete */
 pref("browser.formfill.enable", true);
 
-/* microsummaries */
-pref("browser.microsummary.enabled", false);
-pref("browser.microsummary.updateGenerators", false);
-
 /* spellcheck */
 pref("layout.spellcheckDefault", 0);
 
 /* extension manager and xpinstall */
 pref("xpinstall.whitelist.add", "addons.mozilla.org");
 
 pref("extensions.autoupdate.enabled", true);
 pref("extensions.autoupdate.interval", 86400);

--- a/mobile/components/Sidebar.js
+++ b/mobile/components/Sidebar.js
@@ -109,20 +109,16 @@ Sidebar.prototype = {
   addPanel: function addPanel(aTitle, aContentURL, aCustomizeURL) {
     // not supported
   },
 
   addPersistentPanel: function addPersistentPanel(aTitle, aContentURL, aCustomizeURL) {
     // not supported
   },
 
-  addMicrosummaryGenerator: function addMicrosummaryGenerator(generatorURL) {
-    // not supported
-  },
-
   // The suggestedTitle and suggestedCategory parameters are ignored, but remain
   // for backward compatibility.
   addSearchEngine: function addSearchEngine(engineURL, iconURL, suggestedTitle,
                                             suggestedCategory) {
     if (!this._validateSearchEngine(engineURL, iconURL))
       return;
 
     // File extension for Sherlock search plugin description files

--- a/mobile/installer/package-manifest.in
+++ b/mobile/installer/package-manifest.in
@@ -287,17 +287,16 @@
 @BINPATH@/components/fuelApplication.manifest
 @BINPATH@/components/fuelApplication.js
 @BINPATH@/components/WebContentConverter.js
 @BINPATH@/components/BrowserComponents.manifest
 @BINPATH@/components/nsBrowserContentHandler.js
 @BINPATH@/components/nsBrowserGlue.js
 @BINPATH@/components/nsSetDefaultBrowser.manifest
 @BINPATH@/components/nsSetDefaultBrowser.js
-@BINPATH@/components/nsMicrosummaryService.js
 @BINPATH@/components/BrowserPlaces.manifest
 @BINPATH@/components/nsPrivateBrowsingService.manifest
 @BINPATH@/components/nsPrivateBrowsingService.js
 @BINPATH@/components/toolkitsearch.manifest
 @BINPATH@/components/nsSearchService.js
 @BINPATH@/components/nsSearchSuggestions.js
 @BINPATH@/components/nsTryToClose.manifest
 @BINPATH@/components/nsTryToClose.js