Index: filefield.theme.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/filefield/filefield.theme.inc,v
retrieving revision 1.4
diff -u -p -r1.4 filefield.theme.inc
--- filefield.theme.inc	3 Jul 2008 17:38:39 -0000	1.4
+++ filefield.theme.inc	11 Jul 2008 22:39:56 -0000
@@ -76,7 +76,7 @@ function theme_filefield_icon($file) {
   $dashed_mime = check_plain(strtr($file['filemime'], array('/' => '-')));
 
   if ($icon_url = _filefield_icon_url($file)) {
-    $icon = '<img class="field-icon-'. $dashed_mime .'" src="'. $icon_url .'" />';
+    $icon = '<img class="field-icon-'. $dashed_mime .'" src="'. $icon_url .'" alt="'. t('@mime-type icon', array('@mime-type' => $file['filemime'])) .'" />';
   }
   return '<div class="filefield-icon field-icon-'. $dashed_mime .'">'. $icon .'</div>';
 }