Index: wp-content/themes/twentyeleven/content.php
===================================================================
--- wp-content/themes/twentyeleven/content.php	(revision 21733)
+++ wp-content/themes/twentyeleven/content.php	(working copy)
@@ -45,7 +45,7 @@
 
 		<footer class="entry-meta">
 			<?php $show_sep = false; ?>
-			<?php if ( 'post' == get_post_type() ) : // Hide category and tag text for pages on Search ?>
+			<?php if ( is_object_in_taxonomy( get_post_type(), 'category' ) ) : // Hide category text when not supported ?>
 			<?php
 				/* translators: used between list items, there is a space after the comma */
 				$categories_list = get_the_category_list( __( ', ', 'twentyeleven' ) );
@@ -56,6 +56,8 @@
 				$show_sep = true; ?>
 			</span>
 			<?php endif; // End if categories ?>
+			<?php endif; // End if is_object_in_taxonomy( get_post_type(), 'category' ) ?>
+			<?php if ( is_object_in_taxonomy( get_post_type(), 'post_tag' ) ) : // Hide tag text when not supported ?>
 			<?php
 				/* translators: used between list items, there is a space after the comma */
 				$tags_list = get_the_tag_list( '', __( ', ', 'twentyeleven' ) );
@@ -68,8 +70,8 @@
 				$show_sep = true; ?>
 			</span>
 			<?php endif; // End if $tags_list ?>
-			<?php endif; // End if 'post' == get_post_type() ?>
-
+			<?php endif; // End if is_object_in_taxonomy( get_post_type(), 'post_tag' ) ?>
+			
 			<?php if ( comments_open() ) : ?>
 			<?php if ( $show_sep ) : ?>
 			<span class="sep"> | </span>