diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index f7f066d357..0df6f9be94 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -258,7 +258,7 @@ function url_to_postid($url) {
 
 
 function maybe_unserialize($original) {
-	if ( $gm = @ unserialize($original) )
+	if ( false !== $gm = @ unserialize($original) )
 		return $gm;
 	else
 		return $original;
@@ -2169,4 +2169,4 @@ function get_num_queries() {
 	return $wpdb->num_queries;
 }
 
-?>
\ No newline at end of file
+?>