diff --git a/epub.php b/epub.php
index ec98f0c..00f72ee 100644
--- a/epub.php
+++ b/epub.php
@@ -220,24 +220,11 @@
 		$epub->epub_file = 'epub/lemonde.epub';
 		$epub->title = 'Le Monde ' . $date ;
 
-		// cache json in case url expires
-		$tempjsonpath = 'temp/' . hash('md5', $url) . '.json';
-		$json = '';
-		if (file_exists($tempjsonpath))
-		{
-			$json = file_get_contents($tempjsonpath);
-		}
-		else
-		{
-			$json = file_get_contents($url);
-			file_put_contents($tempjsonpath, $json);
-		}
-
-		$publication = json_decode($json);
+		$publication = get_json($url);
 		$content = array_filter($publication->Content, function($item) { return $item->Category == 'Le Monde'; });
 		usort($content, function ($a, $b) { return $a->PageNumber - $b->PageNumber; });
 
-		$pageindex = json_decode(file_get_contents(str_replace('GetPublicationContentItems', 'GetPublicationPages', $url)));
+		$pageindex = get_json(str_replace('GetPublicationContentItems', 'GetPublicationPages', $url));
 
 		$page = 0;
 		foreach ($content as $article)