diff --git a/ecrire/inc/commencer_page.php b/ecrire/inc/commencer_page.php
index 7453cacd1f3cba3c2dc853179372a76c89bafc0c..a7dec4368c72f989fcde6a1f09c50c73f6db08fc 100644
--- a/ecrire/inc/commencer_page.php
+++ b/ecrire/inc/commencer_page.php
@@ -134,7 +134,7 @@ function init_body($rubrique='accueil', $sous_rubrique='accueil', $id_rubrique='
 		. "<li id='bandeau_couleur3' class='bandeau_couleur'><div class='menu-item'>";
 
 		// Choix du layout
-		$res .= http_img_pack("choix-layout$spip_lang_rtl".($spip_lang=='he'?'_he':'').".gif", _T('choix_interface'), "class='format_png' style='vertical-align: middle' width='59' height='15' usemap='#map_layout'")
+		$res .= http_img_pack("choix-layout$spip_lang_rtl".($spip_lang=='he'?'_he':'').".gif", _T('choix_interface'), " style='vertical-align: middle' width='59' height='15' usemap='#map_layout'")
 		. http_img_pack("rien.gif", "", "width='10' height='1'");
 			// grand ecran
 		if ($spip_ecran == "large") {
diff --git a/ecrire/inc/filtres_images.php b/ecrire/inc/filtres_images.php
index 1acd7acc7a55d302ecca60f666d0eefa1b132f0f..e873a7a624373a24dbda985922b5c0adcee479c4 100644
--- a/ecrire/inc/filtres_images.php
+++ b/ecrire/inc/filtres_images.php
@@ -336,20 +336,12 @@ function image_ecrire_tag($valeurs,$surcharge){
 		$src = $surcharge['src'];
 		unset($surcharge['src']);
 	}
-	
-	// regarder la class pour gerer le 'format_png' en fonction du format de l'image
-	// (et le remettre sinon)
+
 	$class = $valeurs['class'];
 	if (isset($surcharge['class'])){
 		$class = $surcharge['class'];
 		unset($surcharge['class']);
 	}
-	$is_png = preg_match(',[.]png($|\?),i',$src);
-	$p = strpos($class,'format_png');
-	if ($is_png && $p===FALSE)
-		$class .= " format_png";
-	if (!$is_png && $p!==FALSE)
-		$class = preg_replace(",\s*format_png,","",$class);
 	if(strlen($class))
 		$tag = inserer_attribut($tag,'class',$class);
 
@@ -2516,7 +2508,7 @@ function produire_image_typo() {
 	$dimensions = getimagesize($image);
 	$largeur = $dimensions[0];
 	$hauteur = $dimensions[1];
-	return inserer_attribut("<img src='$image' width='$largeur' height='$hauteur' style='width:".$largeur."px;height:".$hauteur."px;' class='format_png' />", 'alt', $alt);
+	return inserer_attribut("<img src='$image' width='$largeur' height='$hauteur' style='width:".$largeur."px;height:".$hauteur."px;' />", 'alt', $alt);
 }
 
 ?>