diff -u b/chessboard.module b/chessboard.module
--- b/chessboard.module
+++ b/chessboard.module
@@ -1,7 +1,7 @@
 <?php
 
 // Load all Field module hooks for Chessboard.
-module_load_include('inc', 'chessboard', 'chessboard.field';
+module_load_include('inc', 'chessboard', 'chessboard.field');
 
 function chessboard_border_filename($border) {
   // $border: T, B, L, R, TL, TR, BL, BR