diff --git a/htdocs/societe/list.php b/htdocs/societe/list.php
index 83c2a45803f..088d1b20b7a 100644
--- a/htdocs/societe/list.php
+++ b/htdocs/societe/list.php
@@ -155,7 +155,7 @@ if (($tmp = $langs->transnoentities("ProfId5".$mysoc->country_code)) && $tmp !=
 if (($tmp = $langs->transnoentities("ProfId6".$mysoc->country_code)) && $tmp != "ProfId6".$mysoc->country_code && $tmp != '-') $fieldstosearchall['s.idprof6'] = 'ProfId6';
 if (!empty($conf->barcode->enabled)) $fieldstosearchall['s.barcode'] = 'Gencod';
 // Personalized search criterias. Example: $conf->global->THIRDPARTY_QUICKSEARCH_ON_FIELDS = 's.nom=ThirdPartyName;s.name_alias=AliasNameShort;s.code_client=CustomerCode'
-if (!empty($conf->global->THIRDPARTY_QUICKSEARCH_ON_FIELDS)) $fieldstosearchall += dolExplodeIntoArray($conf->global->THIRDPARTY_QUICKSEARCH_ON_FIELDS);
+if (!empty($conf->global->THIRDPARTY_QUICKSEARCH_ON_FIELDS)) $fieldstosearchall = dolExplodeIntoArray($conf->global->THIRDPARTY_QUICKSEARCH_ON_FIELDS);
 
 
 // Define list of fields to show into list