diff --git a/library/Class/CriteresRecherche.php b/library/Class/CriteresRecherche.php
index 884d88ba7939a2d540e690c73e7b375790717529..973b858cd1107061900eff155804a3ac838e4416 100644
--- a/library/Class/CriteresRecherche.php
+++ b/library/Class/CriteresRecherche.php
@@ -95,7 +95,10 @@ class Class_CriteresRecherche {
 		return isset($this->_params[$name]) ? $this->_params[$name] : $default_value;
 	}
 
-
+	public function rechercheElargie() {
+		$this->_params['pertinence']=1;
+		return $this;
+	}
 	public function getPertinence() {
 		return (1==$this->getParam('pertinence', false));
 	}
diff --git a/library/Class/MoteurRecherche.php b/library/Class/MoteurRecherche.php
index 7e25e936aa3df248656659cab78cae40caf3a0d0..41b9d6b5a5552bfffd95fa45481f751009a1a536 100644
--- a/library/Class/MoteurRecherche.php
+++ b/library/Class/MoteurRecherche.php
@@ -269,7 +269,7 @@ class Class_MoteurRecherche {
 		// Lancer les requetes
 		$nb=fetchOne($req_comptage);
 		$ret['statut'] = '';
-		if(!$nb) 
+		if(!$nb && ($this->criteres_recherche->getPertinence() || $this->nb_mots <=1)) 
 		{
 			$ret["statut"]="erreur"; 
 			$ret["erreur"]=$this->_translate->_("Aucun résultat trouvé");
@@ -277,6 +277,13 @@ class Class_MoteurRecherche {
 			return $ret;
 		}
 
+		if (!$nb)
+			{
+				$this->criteres_recherche->rechercheElargie();
+				return $this->lancerRecherche($this->criteres_recherche);
+			}
+
+
 		if (!empty($this->erreur))
 			{
 				$ret['statut']=$this->erreur['statut'];
diff --git a/library/ZendAfi/View/Helper/Accueil/RechSimple.php b/library/ZendAfi/View/Helper/Accueil/RechSimple.php
index 949634f9b6ced3eadc1397f81d48593b9249ccfe..7495e7a78b057de39260568c11f88e5086001ace 100644
--- a/library/ZendAfi/View/Helper/Accueil/RechSimple.php
+++ b/library/ZendAfi/View/Helper/Accueil/RechSimple.php
@@ -43,6 +43,8 @@ class ZendAfi_View_Helper_Accueil_RechSimple extends ZendAfi_View_Helper_Accueil
 
 		$this->contenu.='<form name="form" action="'.BASE_URL.'/opac/recherche/simple'.$arg_filtre.'" method="get" class="rechSimpleForm">';
 		$this->contenu.= '<div>';
+		if ($this->preferences["type_doc"])
+			$this->contenu.= '<input type="hidden" name="type_doc" value="'.$this->preferences["type_doc"].'" />';
 		$this->contenu.='<div'.$float.'><label for="expressionRecherche_'.$this->id_module.'">'.$this->preferences["message"].'&nbsp;</label></div>';
 
 		if($float) $this->contenu.=sprintf('<div><label for="select_type_doc">%s&nbsp;</label></div>', $this->translate()->_('Type de document'));