diff --git a/src/Ardent/Ardent.php b/src/Ardent/Ardent.php
index ba64236..e76775f 100755
--- a/src/Ardent/Ardent.php
+++ b/src/Ardent/Ardent.php
@@ -448,7 +448,7 @@ public function belongsTo($related, $foreignKey = NULL, $otherKey = NULL, $relat
 	 * @param  string  $id
 	 * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
 	 */
-	public function morphTo($name = null, $type = null, $id = null) {
+	public function morphTo($name = null, $type = null, $id = null, $ownerKey = null) {
 		// If no name is provided, we will use the backtrace to get the function name
 		// since that is most likely the name of the polymorphic interface. We can
 		// use that to get both the class and foreign key that will be utilized.