diff --git a/lib/delphi/src/Thrift.Transport.MsxmlHTTP.pas b/lib/delphi/src/Thrift.Transport.MsxmlHTTP.pas
index a3f387b..6704c12 100644
--- a/lib/delphi/src/Thrift.Transport.MsxmlHTTP.pas
+++ b/lib/delphi/src/Thrift.Transport.MsxmlHTTP.pas
@@ -256,6 +256,7 @@
     xmlhttp.send( IUnknown( TStreamAdapter.Create( ms, soReference )));
     FInputStream := nil;
     FInputStream := TThriftStreamAdapterCOM.Create( IUnknown( xmlhttp.responseStream) as IStream);
+    ResetConsumedMessageSize;
     UpdateKnownMessageSize( FInputStream.Size);
   finally
     ms.Free;