diff --git a/htdocs/admin/cashdesk.php b/htdocs/admin/cashdesk.php
index b1ecb317d07..f4093bfa51d 100644
--- a/htdocs/admin/cashdesk.php
+++ b/htdocs/admin/cashdesk.php
@@ -28,11 +28,11 @@ require_once(DOL_DOCUMENT_ROOT."/lib/admin.lib.php");
 require_once(DOL_DOCUMENT_ROOT."/html.formproduct.class.php");
 
 // If socid provided by ajax company selector
-if (! empty($_REQUEST['socid_id']))
+if (! empty($_REQUEST['CASHDESK_ID_THIRDPARTY_id']))
 {
-	$_GET['socid'] = $_GET['socid_id'];
-	$_POST['socid'] = $_POST['socid_id'];
-	$_REQUEST['socid'] = $_REQUEST['socid_id'];
+	$_GET['CASHDESK_ID_THIRDPARTY'] = $_GET['CASHDESK_ID_THIRDPARTY_id'];
+	$_POST['CASHDESK_ID_THIRDPARTY'] = $_POST['CASHDESK_ID_THIRDPARTY_id'];
+	$_REQUEST['CASHDESK_ID_THIRDPARTY'] = $_REQUEST['CASHDESK_ID_THIRDPARTY_id'];
 }
 
 // Security check
@@ -89,7 +89,7 @@ print "</tr>\n";
 $var=!$var;
 print '<tr '.$bc[$var].'><td width=\"50%\">'.$langs->trans("CashDeskThirdPartyForSell").'</td>';
 print '<td colspan="2">';
-print $form->select_societes($conf->global->CASHDESK_ID_THIRDPARTY,'CASHDESK_ID_THIRDPARTY','',1);
+print $form->select_societes($conf->global->CASHDESK_ID_THIRDPARTY,'CASHDESK_ID_THIRDPARTY','',1,1);
 print '</td></tr>';
 if ($conf->global->MAIN_MODULE_BANQUE)
 {
diff --git a/htdocs/html.form.class.php b/htdocs/html.form.class.php
index 7f82e341512..11f647d35a2 100644
--- a/htdocs/html.form.class.php
+++ b/htdocs/html.form.class.php
@@ -462,8 +462,9 @@ class Form
 	 *    	\param      filter          Optionnal filters criteras
 	 *		\param		showempty		Add an empty field
 	 * 		\param		showtype		Show if third party is customer, prospect or supplier
+	 * 		\param		forcecombo		Force to use combo box
 	 */
-	function select_societes($selected='',$htmlname='socid',$filter='',$showempty=0, $showtype=0)
+	function select_societes($selected='',$htmlname='socid',$filter='',$showempty=0, $showtype=0, $forcecombo=0)
 	{
 		global $conf,$user,$langs;
 
@@ -473,7 +474,7 @@ class Form
 		if (!$user->rights->societe->client->voir && !$user->societe_id) $sql .= ", ".MAIN_DB_PREFIX."societe_commerciaux as sc";
 		$sql.= " WHERE s.entity = ".$conf->entity;
 		if ($filter) $sql.= " AND ".$filter;
-		if ($selected && $conf->use_javascript_ajax && $conf->global->COMPANY_USE_SEARCH_TO_SELECT)	$sql.= " AND rowid = ".$selected;
+		if (is_numeric($selected) && $conf->use_javascript_ajax && $conf->global->COMPANY_USE_SEARCH_TO_SELECT)	$sql.= " AND s.rowid = ".$selected;
 		if (!$user->rights->societe->client->voir && !$user->societe_id) $sql.= " AND s.rowid = sc.fk_soc AND sc.fk_user = " .$user->id;
 		$sql.= " ORDER BY nom ASC";
 
@@ -481,7 +482,7 @@ class Form
 		$resql=$this->db->query($sql);
 		if ($resql)
 		{
-			if ($conf->use_javascript_ajax && $conf->global->COMPANY_USE_SEARCH_TO_SELECT)
+			if ($conf->use_javascript_ajax && $conf->global->COMPANY_USE_SEARCH_TO_SELECT && ! $forcecombo)
 			{
 				$socid = 0;
 				if ($selected)
diff --git a/htdocs/lib/ajax.lib.php b/htdocs/lib/ajax.lib.php
index 3dc1d0876c3..84e5623a56a 100644
--- a/htdocs/lib/ajax.lib.php
+++ b/htdocs/lib/ajax.lib.php
@@ -133,11 +133,14 @@ function ajax_autocompleter($selected='',$htmlname,$url,$indicator='working')
 	$script.= '<script type="text/javascript">';
 	$script.= 'new Ajax.Autocompleter(\''.$htmlname.'\',\'result'.$htmlname.'\',\''.$url.'\',{
 	           method: \'post\',
-	           paramName: \''.$htmlname.'\',
+	           paramName: \'socid\',
 	           minChars: \'1\',
 	           indicator: \'indicator'.$htmlname.'\',
 	           afterUpdateElement: ac_return
-	         });';	// Note: The ac_return will fill value inside the field htmlname (param of Autocompleter constructor) and htmlname_id (function ac_return)
+	         });';	// paramName must be 'socid', as it is the name of POST parameter to send value in htmlname field.
+					// and it is name of parameter read by ajaxcompanies.php
+		// Note: The ac_return will fill value inside field htmlname (param of Autocompleter constructor)
+		// and will also fill value inside field htmlname_id (using function ac_return)
 	$script.= '</script>';
 
 	return $script;
diff --git a/htdocs/lib/lib_head.js b/htdocs/lib/lib_head.js
index 3f542634fdb..9d331759503 100644
--- a/htdocs/lib/lib_head.js
+++ b/htdocs/lib/lib_head.js
@@ -579,22 +579,22 @@ function newpopup(url,title) {
 
 
 /*=================================================================
-	Purpose:  Recupere id d'une autcompletion Ajax
-	Input:    field,item
+	Purpose:  Set value of a field after return of Ajax call
+	Input:    HTML field name, val
 	Author:   Regis Houssin
 	Licence:  GPL
 ==================================================================*/
-function ac_return(field, item){
-/*        alert('field.name='+field.name+'-'+item.innerHTML); */
+function ac_return(field, val){
+/*        alert('field.name='+field.name+'-'+val.innerHTML); */
         /* on met en place l'expression reguliere */
         var regex = new RegExp('[0123456789]*-idcache', 'i');
         /* on l'applique au contenu */
-        var idCache = regex.exec(item.innerHTML);
+        var idCache = regex.exec(val.innerHTML);
         /* on recupere id */
         id = idCache[0].replace('-idcache', '');
 /*        alert('field.name='+field.name+'-'+idCache[0]+'-'+id); */ 
         /* et on l'affecte au champ cache */
-/*        alert('field.name='+field.name+'-'+item.innerHTML+'-id='+id); */
+/*        alert('field.name='+field.name+'-'+val.innerHTML+'-id='+id); */
         $(field.name+'_id').value = id;
 }
 
diff --git a/htdocs/societe/ajaxcompanies.php b/htdocs/societe/ajaxcompanies.php
index 574b997eec1..30896f497b6 100644
--- a/htdocs/societe/ajaxcompanies.php
+++ b/htdocs/societe/ajaxcompanies.php
@@ -36,6 +36,8 @@ top_htmlhead("", "", 1, 1);
 
 print '<body id="mainbody">';
 
+dol_syslog(join(',',$_POST));
+
 // Generation liste des societes
 if (! empty($_POST['newcompany']) || ! empty($_POST['socid']) || ! empty($_POST['id_fourn']))
 {
@@ -66,6 +68,10 @@ if (! empty($_POST['newcompany']) || ! empty($_POST['socid']) || ! empty($_POST[
 		print '</ul>';
 	}
 }
+else
+{
+
+}
 
 print "</body>";
 print "</html>";