diff --git a/code/TagField.php b/code/TagField.php
index 8cd19f5..3a70eaa 100644
--- a/code/TagField.php
+++ b/code/TagField.php
@@ -71,7 +71,7 @@ class TagField extends DropdownField {
 
 		return $this
 			->customise($properties)
-			->renderWith(["templates/TagField"]);
+			->renderWith(array("templates/TagField"));
 	}
 
 	/**