Index: modules/translation/translation.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/translation/translation.module,v
retrieving revision 1.32
diff -u -p -r1.32 translation.module
--- modules/translation/translation.module	9 Oct 2008 15:15:54 -0000	1.32
+++ modules/translation/translation.module	9 Oct 2008 17:18:05 -0000
@@ -199,7 +199,7 @@ function translation_nodeapi_prepare(&$n
       $node->title = $node->translation_source->title;
       $node->body = $node->translation_source->body;
       // Let every module add custom translated fields.
-      node_invoke_nodeapi($node, 'prepare translation');
+      node_invoke_nodeapi($node, 'prepare_translation');
     }
   }
 }