diff --git a/handlers/views_handler_field.inc b/handlers/views_handler_field.inc
index ff2c32d..31af24c 100644
--- a/handlers/views_handler_field.inc
+++ b/handlers/views_handler_field.inc
@@ -81,7 +81,12 @@ class views_handler_field extends views_handler {
   function query() {
     $this->ensure_my_table();
     // Add the field.
-    $params = $this->options['group_type'] != 'group' ? array('function' => $this->options['group_type']) : array();
+    if (isset($this->options['group_type'])) {
+      $params = $this->options['group_type'] != 'group' ? array('function' => $this->options['group_type']) : array();
+    }
+    else {
+      $params = array();
+    }
     $this->field_alias = $this->query->add_field($this->table_alias, $this->real_field, NULL, $params);
 
     $this->add_additional_fields();