diff --git a/index.js b/index.js
index e9ba28ee..4459f6ba 100644
--- a/index.js
+++ b/index.js
@@ -213,8 +213,8 @@
                        require('sanctuary-type-classes'),
                        require('sanctuary-type-identifiers'));
   } else if (typeof define === 'function' && define.amd != null) {
-    define(['sanctuary-def', 
-      'sanctuary-type-classes', 
+    define(['sanctuary-def',
+      'sanctuary-type-classes',
       'sanctuary-type-identifiers'], f);
   } else {
     self.sanctuary = f(self.sanctuaryDef,