diff --git a/wp-includes/post-template.php b/wp-includes/post-template.php
index 5069e7646a..2a4f5db090 100644
--- a/wp-includes/post-template.php
+++ b/wp-includes/post-template.php
@@ -1208,9 +1208,9 @@ function wp_list_post_revisions( $post_id = 0, $args = null ) {
 	<col style="width: 33%" />
 <thead>
 <tr>
-	<th scope="col"><?php _e( 'Old' ); ?></th>
-	<th scope="col"><?php _e( 'New' ); ?></th>
-	<th scope="col"><?php _e( 'Date Created' ); ?></th>
+	<th scope="col"><?php /* translators: column name in revisons */ _ex( 'Old', 'revisions column name' ); ?></th>
+	<th scope="col"><?php /* translators: column name in revisons */ _ex( 'New', 'revisions column name' ); ?></th>
+	<th scope="col"><?php /* translators: column name in revisons */ _ex( 'Date Created', 'revisions column name' ); ?></th>
 	<th scope="col"><?php _e( 'Author' ); ?></th>
 	<th scope="col" class="action-links"><?php _e( 'Actions' ); ?></th>
 </tr>