diff --git a/plugins/Sidebar/ZipStream.py b/plugins/Sidebar/ZipStream.py
index f4278eac..bcc2a463 100644
--- a/plugins/Sidebar/ZipStream.py
+++ b/plugins/Sidebar/ZipStream.py
@@ -36,7 +36,7 @@ class ZipStream(object):
     def tell(self):
         return self.pos
 
-    def seek(self, pos, type):
+    def seek(self, pos, whence=0):
         pass
 
     def flush(self):