diff --git a/src/hz_grids.erl b/src/hz_grids.erl
index 9971207..f19fdfd 100644
--- a/src/hz_grids.erl
+++ b/src/hz_grids.erl
@@ -38,7 +38,7 @@
 
 -module(hz_grids).
 -vsn("0.9.0").
--export([url/2, url/3, url/4, parse/1, req/2, req/3]).
+-export([url/2, url/3, url/4, parse/1, req/2, req/3, req/4]).
 
 
 -spec url(Instruction, HTTP) -> Result
@@ -193,24 +193,28 @@ l_to_i(S) ->
 req(Type, Message) ->
     req(Type, Message, false).
 
-req(sign, Message, ID) ->
+req(Type, Message, ID) ->
+    {ok, NetworkID} = hz:network_id(),
+    req(Type, Message, ID, NetworkID).
+
+req(sign, Message, ID, NetworkID) ->
     #{"grids"      => 1,
       "chain"      => "gajumaru",
-      "network_id" => hz:network_id(),
+      "network_id" => NetworkID,
       "type"       => "message",
       "public_id"  => ID,
       "payload"    => Message};
-req(tx, Data, ID) ->
+req(tx, Data, ID, NetworkID) ->
     #{"grids"      => 1,
       "chain"      => "gajumaru",
-      "network_id" => hz:network_id(),
+      "network_id" => NetworkID,
       "type"       => "tx",
       "public_id"  => ID,
       "payload"    => Data};
-req(ack, Message, ID) ->
+req(ack, Message, ID, NetworkID) ->
     #{"grids"      => 1,
       "chain"      => "gajumaru",
-      "network_id" => hz:network_id(),
+      "network_id" => NetworkID,
       "type"       => "ack",
       "public_id"  => ID,
       "payload"    => Message}.
diff --git a/src/hz_key_master.erl b/src/hz_key_master.erl
index 1f4703e..ccc4bc4 100644
--- a/src/hz_key_master.erl
+++ b/src/hz_key_master.erl
@@ -10,7 +10,6 @@
 -module(hz_key_master).
 -vsn("0.9.0").
 
-
 -export([make_key/1, encode/1, decode/1]).
 -export([lcg/1]).