diff --git a/include/class_iposte.php b/include/class_iposte.php
index e01a6abb2..1e0636b56 100644
--- a/include/class_iposte.php
+++ b/include/class_iposte.php
@@ -130,7 +130,7 @@ class IPoste extends HtmlInput
     public function dsp_button()
     {
 		$this->id=($this->id=="")?$this->name:$this->id;
-        $ib=new IButton($this->id.'_bt',"","","smallbutton");
+        $ib=new ISmallButton($this->id.'_bt');
         $ib->label=_('Recherche');
        //  $ib->extra='style="background:url(image/search.png) no-repeat;background-position:0;padding-left:36px;"';
         $ib->javascript='search_poste(this)';
diff --git a/include/class_itva_popup.php b/include/class_itva_popup.php
index b48c94bb4..f958b8f24 100644
--- a/include/class_itva_popup.php
+++ b/include/class_itva_popup.php
@@ -127,7 +127,7 @@ class ITva_Popup extends HtmlInput
 		$this->id=($this->id=="")?$this->name:$this->id;
 
         // button
-        $bt=new IButton('bt_'.$this->id,"smallbutton");
+        $bt=new ISmallButton('bt_'.$this->id);
 		$bt->tabindex="-1";
         $bt->label=_(' TVA ');
         $bt->set_attribute('gDossier',dossier::id());