Index: wp-admin/includes/media.php
===================================================================
--- wp-admin/includes/media.php	(revision 40570)
+++ wp-admin/includes/media.php	(working copy)
@@ -1258,7 +1258,7 @@
 		$values = array();
 
 		foreach ( $terms as $term )
-			$values[] = $term->slug;
+			$values[] = $term->name;
 		$t['value'] = join(', ', $values);
 
 		$form_fields[$taxonomy] = $t;
@@ -1649,7 +1649,7 @@
 			$values = array();
 
 			foreach ( $terms as $term )
-				$values[] = $term->slug;
+				$values[] = $term->name;
 			$t['value'] = join(', ', $values);
 			$t['taxonomy'] = true;