diff --git a/modules/labelgenerate/models/generatebarcode.php b/modules/labelgenerate/models/generatebarcode.php
index 8e117b84..d4cd242f 100644
--- a/modules/labelgenerate/models/generatebarcode.php
+++ b/modules/labelgenerate/models/generatebarcode.php
@@ -371,7 +371,7 @@ class GenerateBarcode
 					}
 					// Mark in ref
 					else {
-						preg_match('/^[0-9a-zA-Z&]{1,}-([0-9]{1,})-.*/g', $product['ref'], $matches);
+						preg_match('/^[0-9a-zA-Z&]{1,}-([0-9]{1,})-.*/', $product['ref'], $matches);
 						$ref = $matches[1];
 						$this->_printIdMark($pdf, $ref, 1, $width, $height_label, 30);
 					}