diff --git a/wp-includes/link-template.php b/wp-includes/link-template.php
index 0b4c43989..ac5c31c01 100644
--- a/wp-includes/link-template.php
+++ b/wp-includes/link-template.php
@@ -60,6 +60,9 @@ function get_permalink($id = 0) {
 	);
 
 	$post = &get_post($id);
+
+	if ( empty($post->ID) ) return FALSE;
+
 	if ( $post->post_type == 'page' )
 		return get_page_link($post->ID);
 	elseif ($post->post_type == 'attachment')