diff --git a/htdocs/core/class/html.formmail.class.php b/htdocs/core/class/html.formmail.class.php
index 31147bc8a6a..f9711a51280 100644
--- a/htdocs/core/class/html.formmail.class.php
+++ b/htdocs/core/class/html.formmail.class.php
@@ -548,7 +548,7 @@ class FormMail extends Form
 						$out.= ' <'.$this->tomail.'>';
 						if ($this->withtofree)
 						{
-							$out.= '<br>'.$langs->trans("and").' <input size="'.(is_array($this->withto)?"30":"60").'" id="sendto" name="sendto" value="'.(! is_array($this->withto) && ! is_numeric($this->withto)? (isset($_REQUEST["sendto"])?$_REQUEST["sendto"]:$this->withto) :"").'" />';
+							$out.= '<br>'.$langs->trans("and").' <input class="minwidth200" id="sendto" name="sendto" value="'.(! is_array($this->withto) && ! is_numeric($this->withto)? (isset($_REQUEST["sendto"])?$_REQUEST["sendto"]:$this->withto) :"").'" />';
 						}
 					}
 					else
@@ -561,7 +561,7 @@ class FormMail extends Form
 				{
 					if (! empty($this->withtofree))
 					{
-						$out.= '<input size="'.(is_array($this->withto)?"30":"60").'" id="sendto" name="sendto" value="'.(! is_array($this->withto) && ! is_numeric($this->withto)? (isset($_REQUEST["sendto"])?$_REQUEST["sendto"]:$this->withto) :"").'" />';
+						$out.= '<input class="minwidth200" id="sendto" name="sendto" value="'.(! is_array($this->withto) && ! is_numeric($this->withto)? (isset($_REQUEST["sendto"])?$_REQUEST["sendto"]:$this->withto) :"").'" />';
 					}
 					if (! empty($this->withto) && is_array($this->withto))
 					{