diff --git a/includes/callback_add_aggregation.inc b/includes/callback_add_aggregation.inc
index 1c7a7756..069c4107 100644
--- a/includes/callback_add_aggregation.inc
+++ b/includes/callback_add_aggregation.inc
@@ -203,20 +203,14 @@ public function reduce($a, $b) {
         return isset($a) ? min($a, $b) : $b;
       case 'first':
         return isset($a) ? $a : $b;
-      case 'last':
-        return isset($b) ? $b : $a;
       case 'first_char':
         $b = "$b";
         if (isset($a) || $b === '') {
           return $a;
         }
         return drupal_substr($b, 0, 1);
-      case 'last_char':
-        $b = "$b";
-        if (isset($a) || $b === '') {
-          return $a;
-        }
-        return drupal_substr($b, -1, 1);
+      case 'last':
+        return isset($b) ? $b : $a;
       case 'list':
         if (!isset($a)) {
           $a = array();
@@ -295,9 +289,8 @@ protected function getTypes($info = 'name') {
           'max' => t('Maximum'),
           'min' => t('Minimum'),
           'first' => t('First'),
-          'last' => t('Last'),
           'first_char' => t('First letter'),
-          'last_char' => t('Last letter'),
+          'last' => t('Last'),
           'list' => t('List'),
         );
       case 'type':
@@ -308,9 +301,8 @@ protected function getTypes($info = 'name') {
           'max' => 'integer',
           'min' => 'integer',
           'first' => 'string',
-          'last' => 'string',
           'first_char' => 'string',
-          'last_char' => 'string',
+          'last' => 'string',
           'list' => 'list<string>',
         );
       case 'description':
@@ -321,9 +313,8 @@ protected function getTypes($info = 'name') {
           'max' => t('The Maximum aggregation computes the numerically largest contained field value.'),
           'min' => t('The Minimum aggregation computes the numerically smallest contained field value.'),
           'first' => t('The First aggregation will simply keep the first encountered field value. This is helpful foremost when you know that a list field will only have a single value.'),
-          'last' => t('The Last aggregation will simply keep the last encountered field value.'),
           'first_char' => t('The "First letter" aggregation uses just the first letter of the first encountered field value as the aggregated value. This can, for example, be used to build a Glossary view.'),
-          'last_char' => t('The "Last letter" aggregation uses just the last letter of the first encountered field value as the aggregated value.'),
+          'last' => t('The Last aggregation will simply keep the last encountered field value.'),
           'list' => t('The List aggregation collects all field values into a multi-valued field containing all values.'),
         );
     }