Index: sites/all/modules/contrib/taxonomy_image/taxonomy_image.module
===================================================================
--- sites/all/modules/contrib/taxonomy_image/taxonomy_image.module	(revision 2292)
+++ sites/all/modules/contrib/taxonomy_image/taxonomy_image.module	(working copy)
@@ -63,8 +63,10 @@
       else {
         $current->title = taxonomy_image_tt("taxonomy:term:$current->tid:name", $current->name);
       }
+      $current->alt = taxonomy_image_tt("taxonomy:term:$current->tid:name", $current->name);
       // Have to dump double quotes for attribute.
       $current->title = htmlspecialchars(strip_tags($current->title), ENT_COMPAT);
+      $current->alt = htmlspecialchars(strip_tags($current->alt), ENT_COMPAT);
 
       $my_attrs = array(
         'width' => $current->width,
@@ -91,13 +93,13 @@
 
         default:
           if ($preset == 'ORIGINAL') {
-            $return_url = theme('image', $current->url, $current->name, $current->title, $attributes, FALSE);
+            $return_url = theme('image', $current->url, $current->alt, $current->title, $attributes, FALSE);
           }
           else {
             // Make sure the attributes don't try to override the preset.
             unset($attributes['width'], $attributes['height']);
             $mypath = variable_get('taxonomy_image_path', 'category_pictures') .'/';
-            $return_url = theme('imagecache', $preset, $mypath . $current->path, $current->name, $current->title, $attributes);
+            $return_url = theme('imagecache', $preset, $mypath . $current->path, $current->alt, $current->title, $attributes);
           }
       }
       if ($wrapper) {