diff --git a/lib/delphi/test/multiplexed/Multiplex.Test.Client.dpr b/lib/delphi/test/multiplexed/Multiplex.Test.Client.dpr
index 4278d8f..a57e93a 100644
--- a/lib/delphi/test/multiplexed/Multiplex.Test.Client.dpr
+++ b/lib/delphi/test/multiplexed/Multiplex.Test.Client.dpr
@@ -36,6 +36,7 @@
   Thrift.Server in '..\..\src\Thrift.Server.pas',
   Thrift.Stream in '..\..\src\Thrift.Stream.pas',
   Thrift.TypeRegistry in '..\..\src\Thrift.TypeRegistry.pas',
+  Thrift.WinHTTP in '..\..\src\Thrift.WinHTTP.pas',
   Thrift.Utils in '..\..\src\Thrift.Utils.pas';
 
 var
diff --git a/lib/delphi/test/multiplexed/Multiplex.Test.Server.dpr b/lib/delphi/test/multiplexed/Multiplex.Test.Server.dpr
index 120462b..81ed3dd 100644
--- a/lib/delphi/test/multiplexed/Multiplex.Test.Server.dpr
+++ b/lib/delphi/test/multiplexed/Multiplex.Test.Server.dpr
@@ -36,6 +36,7 @@
   Thrift.Collections in '..\..\src\Thrift.Collections.pas',
   Thrift.Server in '..\..\src\Thrift.Server.pas',
   Thrift.Utils in '..\..\src\Thrift.Utils.pas',
+  Thrift.WinHTTP in '..\..\src\Thrift.WinHTTP.pas',
   Thrift.TypeRegistry in '..\..\src\Thrift.TypeRegistry.pas',
   Thrift.Stream in '..\..\src\Thrift.Stream.pas';