diff --git a/src/hz_grids.erl b/src/hz_grids.erl
index 7e54aa1..6a9c6de 100644
--- a/src/hz_grids.erl
+++ b/src/hz_grids.erl
@@ -88,7 +88,7 @@ url(Instruction, Recipient, Amount) ->
          Node        :: {inet:ip_address() | inet:hostname(), inet:port_number()}
                       | uri_string:uri_string(), % "http://..." | "https://..."
          Recipient   :: string(),
-         Amount      :: non_neg_integer(),
+         Amount      :: non_neg_integer() | none,
          Payload     :: binary(),
          GRIDS       :: uri_string:uri_string().
 %% @doc
@@ -113,8 +113,12 @@ h_to_s(Host) when is_binary(Host) -> Host;
 h_to_s(Host) when is_tuple(Host)  -> inet:ntoa(Host);
 h_to_s(Host) when is_atom(Host)   -> atom_to_list(Host).
 
+qwargs(none, "") ->
+    [];
 qwargs(Amount, "") ->
     ["?a=", integer_to_list(Amount)];
+qwargs(none, Payload) ->
+    [$? | uri_string:compose_query([{"p", Payload}])];
 qwargs(Amount, Payload) ->
     [$? | uri_string:compose_query([{"a", integer_to_list(Amount)}, {"p", Payload}])].