diff --git a/src/machi_flu1_client.erl b/src/machi_flu1_client.erl
index d0e6387..1872be0 100644
--- a/src/machi_flu1_client.erl
+++ b/src/machi_flu1_client.erl
@@ -554,7 +554,7 @@ write_chunk2(Sock, EpochID, File0, Offset, Chunk0) ->
                 {Tag, CS} = machi_util:unmake_tagged_csum(ChunkCSum),
                 {Chk, Tag, CS}
         end,
-    io:format(user, "\n~s LINE ~w eid ~w File ~w Offset ~w Chunk0 ~w\n", [?MODULE, ?LINE, EpochID, File, Offset, Chunk0]),
+    %% io:format(user, "\n~s LINE ~w eid ~w File ~w Offset ~w Chunk0 ~w\n", [?MODULE, ?LINE, EpochID, File, Offset, Chunk0]),
     Req = machi_pb_translate:to_pb_request(
             ReqID,
             {low_write_chunk, EpochID, File, Offset, Chunk, CSum_tag, CSum}),
@@ -709,7 +709,7 @@ put(xxx, Sock),
         end
     catch
         _X:_Y ->
-            io:format(user, "DBG Whoa ~w w_connect port ~w sock ~w err ~w ~w\n", [time(), Port, get(xxx), _X, _Y]),
+            %% io:format(user, "DBG Whoa ~w w_connect port ~w sock ~w err ~w ~w\n", [time(), Port, get(xxx), _X, _Y]),
             undefined
     end.