diff --git a/anki/sync.py b/anki/sync.py
index 106913d6a..5c14c6ac8 100644
--- a/anki/sync.py
+++ b/anki/sync.py
@@ -68,7 +68,6 @@ def incrementalSend(self, strOrFile):
         else:
             cnt = 0
             while 1:
-                time.sleep(0.1)
                 if sendProgressHook:
                     sendProgressHook(cnt)
                 data = strOrFile.read(65536)