diff --git a/model/ArrayList.php b/model/ArrayList.php
index 986ea8e45..c339dd279 100644
--- a/model/ArrayList.php
+++ b/model/ArrayList.php
@@ -155,7 +155,7 @@ class ArrayList extends ViewableData implements SS_List {
 		return end($this->items);
 	}
 
-	public function map($keyfield, $titlefield) {
+	public function map($keyfield = 'ID', $titlefield = 'Title') {
 		$map = array();
 		foreach ($this->items as $item) {
 			$map[$this->extractValue($item, $keyfield)] = $this->extractValue($item, $titlefield);
diff --git a/model/List.php b/model/List.php
index 96c7e2048..0b18663e1 100644
--- a/model/List.php
+++ b/model/List.php
@@ -67,7 +67,7 @@ interface SS_List extends ArrayAccess, Countable, IteratorAggregate {
 	 * @param  string $titlefield
 	 * @return array
 	 */
-	public function map($keyfield, $titlefield);
+	public function map($keyfield = 'ID', $titlefield = 'Title');
 
 	/**
 	 * Returns the first item in the list where the key field is equal to the
@@ -85,7 +85,7 @@ interface SS_List extends ArrayAccess, Countable, IteratorAggregate {
 	 * @param  string $field
 	 * @return array
 	 */
-	public function column($field);
+	public function column($colName = "ID");
 
 	/**
 	 * Returns TRUE if the list can be sorted by a field.