--- /tcpdf.php 
+++ /tcpdf.php
@@ -15184,7 +15184,7 @@ class TCPDF {
 	 * @since 3.1.000 (2008-06-09)
 	 * @public
 	 */
-	public function write1DBarcode($code, $type, $x='', $y='', $w='', $h='', $xres='', $style='', $align='') {
+	public function write1DBarcode($code, $type, $x='', $y='', $w='', $h='', $xres='', array $style=null, $align='') {
 		if (TCPDF_STATIC::empty_string(trim($code))) {
 			return;
 		}
@@ -15503,7 +15503,7 @@ class TCPDF {
 	 * @since 4.5.037 (2009-04-07)
 	 * @public
 	 */
-	public function write2DBarcode($code, $type, $x='', $y='', $w='', $h='', $style='', $align='', $distort=false) {
+	public function write2DBarcode($code, $type, $x='', $y='', $w='', $h='', array $style=null, $align='', $distort=false) {
 		if (TCPDF_STATIC::empty_string(trim($code))) {
 			return;
 		}