diff --git a/sat/plugins/plugin_xep_0363.py b/sat/plugins/plugin_xep_0363.py
index 93be9801..2eb3b467 100644
--- a/sat/plugins/plugin_xep_0363.py
+++ b/sat/plugins/plugin_xep_0363.py
@@ -194,7 +194,7 @@ class XEP_0363(object):
                 self._uploadEb,
                 (sat_file, slot),
                 None,
-                (sat_file),
+                (sat_file,),
             )
 
             return progress_id, download_d