diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index cee87c8ab41..33d2f70caa4 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -4724,7 +4724,7 @@ class Form
 			$more .= '<div class="tagtable paddingtopbottomonly centpercent noborderspacing">'."\n";
 			foreach ($formquestion as $key => $input) {
 				if (is_array($input) && !empty($input)) {
-					$size = (!empty($input['size']) ? ' size="'.$input['size'].'"' : '');
+					$size = (!empty($input['size']) ? ' size="'.$input['size'].'"' : '');	// deprecated. Use morecss instead.
 					$moreattr = (!empty($input['moreattr']) ? ' '.$input['moreattr'] : '');
 					$morecss = (!empty($input['morecss']) ? ' '.$input['morecss'] : '');
 
diff --git a/htdocs/product/card.php b/htdocs/product/card.php
index 2472c764d7e..281613caae9 100644
--- a/htdocs/product/card.php
+++ b/htdocs/product/card.php
@@ -2417,7 +2417,7 @@ if (($action == 'clone' && (empty($conf->use_javascript_ajax) || !empty($conf->d
 	// Define confirmation messages
 	$formquestionclone = array(
 		'text' => $langs->trans("ConfirmClone"),
-		array('type' => 'text', 'name' => 'clone_ref', 'label' => $langs->trans("NewRefForClone"), 'value' => empty($tmpcode) ? $langs->trans("CopyOf").' '.$object->ref : $tmpcode, 'size'=>24),
+		array('type' => 'text', 'name' => 'clone_ref', 'label' => $langs->trans("NewRefForClone"), 'value' => empty($tmpcode) ? $langs->trans("CopyOf").' '.$object->ref : $tmpcode, 'morecss'=>'width150'),
 		array('type' => 'checkbox', 'name' => 'clone_content', 'label' => $langs->trans("CloneContentProduct"), 'value' => 1),
 		array('type' => 'checkbox', 'name' => 'clone_categories', 'label' => $langs->trans("CloneCategoriesProduct"), 'value' => 1),
 	);