Index: taxonomy.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/taxonomy/taxonomy.module,v
retrieving revision 1.423
diff -u -r1.423 taxonomy.module
--- taxonomy.module	28 Jun 2008 19:51:02 -0000	1.423
+++ taxonomy.module	14 Jul 2008 20:29:08 -0000
@@ -969,7 +969,7 @@
  *   The vocabulary's ID
  *
  * @return
- *   The vocabulary object with all of its metadata, if exists, NULL otherwise.
+ *   The vocabulary object with all of its metadata, if exists, FALSE otherwise.
  *   Results are statically cached.
  */
 function taxonomy_vocabulary_load($vid) {
@@ -992,8 +992,8 @@
     }
   }
 
-  // Return NULL if this vocabulary does not exist.
-  return !empty($vocabularies[$vid]) ? $vocabularies[$vid] : NULL;
+  // Return FALSE if this vocabulary does not exist.
+  return !empty($vocabularies[$vid]) ? $vocabularies[$vid] : FALSE;
 }
 
 /**