diff --git a/ext/mysql/php_mysql.c b/ext/mysql/php_mysql.c
index af8cafb3017..75d023689c3 100644
--- a/ext/mysql/php_mysql.c
+++ b/ext/mysql/php_mysql.c
@@ -603,10 +603,17 @@ PHP_FUNCTION(mysql_close)
 	}
 	
 	ZEND_FETCH_RESOURCE2(mysql, MYSQL *, mysql_link, id, "MySQL-Link", le_link, le_plink);
-	zend_list_delete(Z_RESVAL_PP(mysql_link));
-	if (Z_RESVAL_PP(mysql_link)==MySG(default_link)) {
-		zend_list_delete(MySG(default_link));
+
+	if (id==-1) { /* explicit resource number */
+		zend_list_delete(Z_RESVAL_PP(mysql_link));
 	}
+
+	if (id!=-1 
+		|| (mysql_link && Z_RESVAL_PP(mysql_link)==MySG(default_link))) {
+		zend_list_delete(MySG(default_link));
+		MySG(default_link) = -1;
+	}
+
 	RETURN_TRUE;
 }
 /* }}} */