diff --git a/test/erl/src/test_thrift_server.erl b/test/erl/src/test_thrift_server.erl
index dad8dec..145feac 100644
--- a/test/erl/src/test_thrift_server.erl
+++ b/test/erl/src/test_thrift_server.erl
@@ -19,7 +19,7 @@
 
 -module(test_thrift_server).
 
--export([start/0, start/1, start_link/2, handle_function/2]).
+-export([start/0, start/1, start_link/2, handle_function/2, handle_error/2]).
 
 -include("thrift_constants.hrl").
 -include("gen-erl/thrift_test_types.hrl").
@@ -231,3 +231,7 @@
     io:format("testOneway: ~p~n", [Seconds]),
     timer:sleep(1000 * Seconds),
     ok.
+
+% This is not mandatory but improving test logs.
+handle_error(Arg1, Arg2) ->
+  io:format("handle_error is called: ~p ~p~n", [Arg1, Arg2]).
diff --git a/test/go/src/bin/testclient/main.go b/test/go/src/bin/testclient/main.go
index f0ce052..b711958 100644
--- a/test/go/src/bin/testclient/main.go
+++ b/test/go/src/bin/testclient/main.go
@@ -34,6 +34,7 @@
 var port = flag.Int64("port", 9090, "Port number to connect")
 var domain_socket = flag.String("domain-socket", "", "Domain Socket (e.g. /tmp/thrifttest.thrift), instead of host and port")
 var transport = flag.String("transport", "buffered", "Transport: buffered, framed, http, zlib")
+var _ = flag.Bool("zlib", false, "For compatibility. Ignored.")
 var protocol = flag.String("protocol", "binary", "Protocol: binary, compact, json")
 var ssl = flag.Bool("ssl", false, "Encrypted Transport using SSL")
 var testloops = flag.Int("testloops", 1, "Number of Tests")
diff --git a/test/go/src/bin/testserver/main.go b/test/go/src/bin/testserver/main.go
index 011a71d..60a764f 100644
--- a/test/go/src/bin/testserver/main.go
+++ b/test/go/src/bin/testserver/main.go
@@ -33,6 +33,7 @@
 var port = flag.Int64("port", 9090, "Port number to connect")
 var domain_socket = flag.String("domain-socket", "", "Domain Socket (e.g. /tmp/ThriftTest.thrift), instead of host and port")
 var transport = flag.String("transport", "buffered", "Transport: buffered, framed, http, zlib")
+var _ = flag.Bool("zlib", false, "For compatibility. Ignored.")
 var protocol = flag.String("protocol", "binary", "Protocol: binary, compact, json, header")
 var ssl = flag.Bool("ssl", false, "Encrypted Transport using SSL")
 var certPath = flag.String("certPath", "keys", "Directory that contains SSL certificates")