diff --git a/htdocs/core/modules/barcode/mod_barcode_thirdparty_standard.php b/htdocs/core/modules/barcode/mod_barcode_thirdparty_standard.php
index fd0a87efe5b..e25cd1dd115 100644
--- a/htdocs/core/modules/barcode/mod_barcode_thirdparty_standard.php
+++ b/htdocs/core/modules/barcode/mod_barcode_thirdparty_standard.php
@@ -110,7 +110,7 @@ class mod_barcode_thirdparty_standard extends ModeleNumRefBarCode
 		//$texte.= '<tr><td>'.$langs->trans("Mask").' ('.$langs->trans("BarCodeModel").'):</td>';
 		$texte .= '<tr><td>'.$langs->trans("Mask").':</td>';
 		$texte .= '<td class="right">'.$form->textwithpicto('<input type="text" class="flat minwidth175" name="value1" value="'.(!empty($conf->global->BARCODE_STANDARD_THIRDPARTY_MASK) ? $conf->global->BARCODE_STANDARD_THIRDPARTY_MASK : '').'"'.$disabled.'>', $tooltip, 1, 1).'</td>';
-		$texte .= '<td class="left" rowspan="2">&nbsp; <input type="submit" class="button button-edit reposition" name="modify" value="'.$langs->trans("Modify").'"'.$disabled.'></td>';
+		$texte .= '<td class="left" rowspan="2">&nbsp; <input type="submit" class="button button-edit reposition small" name="modify" value="'.$langs->trans("Modify").'"'.$disabled.'></td>';
 		$texte .= '</tr>';
 
 		$texte .= '</table>';