diff --git a/php/Modules/Album.php b/php/Modules/Album.php
index 1754cb0..fef65cf 100644
--- a/php/Modules/Album.php
+++ b/php/Modules/Album.php
@@ -306,9 +306,14 @@ final class Album {
 		$zip->close();
 
 		// Send zip
-		header("Content-Type: application/zip");
-		header("Content-Disposition: attachment; filename=\"$zipTitle.zip\"");
-		header("Content-Length: " . filesize($filename));
+		header("Content-type: application/zip");
+		header("Content-disposition: attachment; filename=\"$zipTitle.zip\"");
+		header("Content-length: " . filesize($filename));
+
+		// Clean before, in order to avoid 500 error
+		ob_end_clean();
+		flush();
+
 		readfile($filename);
 
 		// Delete zip
@@ -642,4 +647,4 @@ final class Album {
 
 }
 
-?>
\ No newline at end of file
+?>