diff --git a/src/applications/dashboard/layoutconfig/PhabricatorDashboardLayoutConfig.php b/src/applications/dashboard/layoutconfig/PhabricatorDashboardLayoutConfig.php
--- a/src/applications/dashboard/layoutconfig/PhabricatorDashboardLayoutConfig.php
+++ b/src/applications/dashboard/layoutconfig/PhabricatorDashboardLayoutConfig.php
@@ -137,8 +137,6 @@
   public static function getLayoutModeSelectOptions() {
     return array(
       self::MODE_FULL             => pht('One full-width column'),
-      self::MODE_HALF_AND_HALF    => pht('Two columns, 1/2 and 1/2'),
-      self::MODE_THIRD_AND_THIRDS => pht('Two columns, 1/3 and 2/3'),
       self::MODE_THIRDS_AND_THIRD => pht('Two columns, 2/3 and 1/3'),
     );
   }