diff --git a/scrython/bulk_data/bulk_data.py b/scrython/bulk_data/bulk_data.py
index c97e203..8a145c6 100644
--- a/scrython/bulk_data/bulk_data.py
+++ b/scrython/bulk_data/bulk_data.py
@@ -186,7 +186,8 @@ class BulkData(object):
             human_readable (bool, optional): Defaults to False. Converts the bytes into a human readable format
         
         Returns:
-            integer or string: Returns integer by default. If human_readable is True, returns a string.
+            integer: Returns integer by default. 
+            string: If human_readable is True, returns a string.
         """
         self._checkForTupleKey('data', num, 'compressed_size')