diff --git a/resources/sql/patches/20130912.maniphest.2.created.sql b/resources/sql/patches/20130912.maniphest.2.created.sql
new file mode 100644
index 0000000000..dbd259d903
--- /dev/null
+++ b/resources/sql/patches/20130912.maniphest.2.created.sql
@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_maniphest.maniphest_task
+  ADD KEY `key_dateCreated` (dateCreated);
diff --git a/src/applications/maniphest/query/ManiphestTaskQuery.php b/src/applications/maniphest/query/ManiphestTaskQuery.php
index 8c141539ba..d76314d111 100644
--- a/src/applications/maniphest/query/ManiphestTaskQuery.php
+++ b/src/applications/maniphest/query/ManiphestTaskQuery.php
@@ -232,8 +232,6 @@ final class ManiphestTaskQuery
     $where[] = $this->buildXProjectWhereClause($conn);
     $where[] = $this->buildFullTextWhereClause($conn);
 
-    // TODO: Add a key for this the next time we hit this table.
-
     if ($this->dateCreatedAfter) {
       $where[] = qsprintf(
         $conn,
diff --git a/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php b/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
index e0967875e5..779df9f851 100644
--- a/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
+++ b/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
@@ -1576,6 +1576,10 @@ final class PhabricatorBuiltinPatchList extends PhabricatorSQLPatchList {
         'type' => 'sql',
         'name' => $this->getPatchPath('20130912.maniphest.1.touch.sql'),
       ),
+      '20130912.maniphest.2.created.sql' => array(
+        'type' => 'sql',
+        'name' => $this->getPatchPath('20130912.maniphest.2.created.sql'),
+      ),
     );
   }
 }