diff --git a/tcpdf.php b/tcpdf.php
index 9227846..81ea627 100644
--- a/tcpdf.php
+++ b/tcpdf.php
@@ -15190,7 +15190,7 @@ 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='', $style=[], $align='') {
 		if (TCPDF_STATIC::empty_string(trim($code))) {
 			return;
 		}