diff --git a/src/Mdb2/Db.php b/src/Mdb2/Db.php
index 1f11bba..4f87588 100644
--- a/src/Mdb2/Db.php
+++ b/src/Mdb2/Db.php
@@ -202,7 +202,8 @@ public function select_db($database) {
 
 	/**
 	 * Db::link_id()
-	 * @return int
+	 *
+	 * @return int|\MyDb\Mdb2\mysqli
 	 */
 	public function link_id() {
 		return $this->Link_ID;
diff --git a/src/Mysqli/Db.php b/src/Mysqli/Db.php
index 3da5619..e51d5c1 100644
--- a/src/Mysqli/Db.php
+++ b/src/Mysqli/Db.php
@@ -146,7 +146,8 @@ public function select_db($database) {
 
 	/**
 	 * Db::link_id()
-	 * @return int
+	 *
+	 * @return int|\MyDb\Mysqli\mysqli
 	 */
 	public function link_id() {
 		return $this->Link_ID;
@@ -367,7 +368,7 @@ public function qr($query, $line = '', $file = '') {
 	 * creates a prepaired statement from query
 	 *
 	 * @param string $query sql wuery like INSERT INTO table (col) VALUES (?)  or  SELECT * from table WHERE col1 = ? and col2 = ?  or  UPDATE table SET col1 = ?, col2 = ? WHERE col3 = ?
-	 * @return mysqli_stmt a statement object or FALSE if an error occurred.
+	 * @return int|\MyDb\Mysqli\mysqli_stmt
 	 */
 	public function prepare($query) {
 		if (!$this->connect()) {