diff --git a/BackendUrl.hs b/BackendUrl.hs
index f18c800e96..3f0846885d 100644
--- a/BackendUrl.hs
+++ b/BackendUrl.hs
@@ -28,7 +28,7 @@ dummyRemove state url = return False
 downloadUrl :: State -> Key -> FilePath -> IO Bool
 downloadUrl state url file = do
 	putStrLn $ "download: " ++ url
-	result <- try $ rawSystem "curl" ["-o", file, url]
+	result <- try $ rawSystem "curl" ["-#", "-o", file, url]
 	case (result) of
 		Left _ -> return False
 		Right _ -> return True