diff --git a/public/articolo.php b/public/articolo.php
index f3336f0..0b12e4b 100644
--- a/public/articolo.php
+++ b/public/articolo.php
@@ -61,8 +61,8 @@ try {
 	}
 	else if ($media->mediaType == MediaModel::TYPE_IMAGE){
 		$mediaMetaInfo = 'itemprop="image"';
-		$additionalHeaders[] = '<meta property="og:image" content="'.$media->getRenderer()->getImageLink(MediaRenderer::SIZE_MEDIUM).'"/>';
-		$additionalHeaders[] = '<meta property="og:image:url" content="'.$media->getRenderer()->getImageLink(MediaRenderer::SIZE_MEDIUM).'"/>';
+		$additionalHeaders[] = '<meta property="og:image" content="'.$media->getRenderer()->getImageLink(MediaRenderer::SIZE_BIG).'"/>';
+		$additionalHeaders[] = '<meta property="og:image:url" content="'.$media->getRenderer()->getImageLink(MediaRenderer::SIZE_BIG).'"/>';
 	}
 	
 	if(array_key_exists("submit", $_POST) && strcmp($_POST["submit"] ,"Submit")==0){