diff --git a/htdocs/contrat/card.php b/htdocs/contrat/card.php
index af5f83cdbde..5e9179f342f 100644
--- a/htdocs/contrat/card.php
+++ b/htdocs/contrat/card.php
@@ -938,7 +938,7 @@ if ($action == 'create')
 
 	// Ref Int
 	print '<tr><td>'.$langs->trans('RefCustomer').'</td>';
-	print '<td colspan="2"><input type="text" siez="5" name="ref_supplier" id="ref_supplier" value="'.GETPOST('ref_supplier','alpha').'"></td></tr>';
+	print '<td colspan="2"><input type="text" size="5" name="ref_supplier" id="ref_supplier" value="'.GETPOST('ref_supplier','alpha').'"></td></tr>';
 
     // Customer
 	print '<tr>';