diff --git a/manual_test.py b/manual_test.py
index ac866ae..79a1476 100644
--- a/manual_test.py
+++ b/manual_test.py
@@ -32,7 +32,6 @@ index = 1
 listing = obsClient.listVersions(
 			bucket,
 			version = Versions(
-				prefix = prefiks,
 				encoding_type = 'url',
 				key_marker = mark,
 				max_keys = 1000