diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index dfa393edd..0b2587dc8 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -343,9 +343,11 @@ function get_alloptions() {
 }
 
 function update_option($option_name, $newvalue) {
-	global $wpdb, $tableoptions;
+	global $wpdb, $tableoptions, $cache_settings;
 	// No validation at the moment
 	$wpdb->query("UPDATE $tableoptions SET option_value = '$newvalue' WHERE option_name = '$option_name'");
+	$cache_settings = get_alloptions(); // Re cache settings
+	return true;
 }
 
 function add_option() {