diff --git a/lib/converter.php b/lib/converter.php
index 50fa1f00..d8a7b272 100644
--- a/lib/converter.php
+++ b/lib/converter.php
@@ -30,7 +30,7 @@ class Converter {
 	
 	public static function checkConnection(){
 		$expected = file_get_contents(__DIR__ . '/response.odt');
-		$converted = self::convertExternal('', 'application/vnd.oasis.opendocument.text');
+		$converted = self::convertExternal('', 'odt');
 		
 		return $converted === $expected;
 	}