diff --git a/lib/alterl/src/thrift_binary_protocol.erl b/lib/alterl/src/thrift_binary_protocol.erl
index 0605dc1..0525621 100644
--- a/lib/alterl/src/thrift_binary_protocol.erl
+++ b/lib/alterl/src/thrift_binary_protocol.erl
@@ -115,6 +115,10 @@
     write(This, {i32, length(Str)}),
     write(This, list_to_binary(Str));
 
+write(This, {string, Bin}) when is_binary(Bin) ->
+    write(This, {i32, size(Bin)}),
+    write(This, Bin);
+
 write(This, Binary) when is_binary(Binary) ->
     thrift_transport:write(This#binary_protocol.transport, Binary).
 
@@ -176,7 +180,7 @@
 
 read(This, field_stop) ->
     {ok, ?tType_STOP} =  read(This, byte),
-    ok;    
+    ok;
 
 %%