--- a/mail/app/profile/all-thunderbird.js
+++ b/mail/app/profile/all-thunderbird.js
@@ -175,16 +175,19 @@ pref("extensions.update.url", "https://v
 
 pref("extensions.update.background.url", "https://versioncheck-bg.addons.thunderbird.net/update/VersionCheck.php?reqVersion=%REQ_VERSION%&id=%ITEM_ID%&version=%ITEM_VERSION%&maxAppVersion=%ITEM_MAXAPPVERSION%&status=%ITEM_STATUS%&appID=%APP_ID%&appVersion=%APP_VERSION%&appOS=%APP_OS%&appABI=%APP_ABI%&locale=%APP_LOCALE%&currentAppVersion=%CURRENT_APP_VERSION%&updateType=%UPDATE_TYPE%&compatMode=%COMPATIBILITY_MODE%");
 
 pref("extensions.update.interval", 86400);  // Check for updates to Extensions and
                                             // Themes every day
 
 pref("extensions.dss.switchPending", false);    // Non-dynamic switch pending after next
 
+// Don't show recommendations on the extension and theme list views.
+pref("extensions.htmlaboutaddons.recommendations.enabled", false);
+
 pref("lightweightThemes.update.enabled", true);
 
 // Built-in default permissions.
 pref("permissions.manager.defaultsUrl", "resource://app/defaults/permissions");
 
 pref("general.smoothScroll", true);
 #ifdef UNIX_BUT_NOT_MAC
 pref("general.autoScroll", false);