diff --git a/quic/core/qpack/offline/qpack_offline_decoder.h b/quic/core/qpack/offline/qpack_offline_decoder.h
index ecaebc8..10598ce 100644
--- a/quic/core/qpack/offline/qpack_offline_decoder.h
+++ b/quic/core/qpack/offline/qpack_offline_decoder.h
@@ -19,7 +19,7 @@
 // a list of expected header lists read from another file.  File format is
 // described at
 // https://github.com/quicwg/base-drafts/wiki/QPACK-Offline-Interop.
-class QUIC_EXPORT_PRIVATE QpackOfflineDecoder
+class /*QUIC_EXPORT_PRIVATE*/ QpackOfflineDecoder
     : public QpackDecoder::EncoderStreamErrorDelegate {
  public:
   QpackOfflineDecoder();
@@ -40,7 +40,7 @@
   // Data structure to hold TestHeadersHandler and QpackProgressiveDecoder until
   // decoding of a header header block (and all preceding header blocks) is
   // complete.
-  struct QUIC_EXPORT_PRIVATE Decoder {
+  struct /*QUIC_EXPORT_PRIVATE*/ Decoder {
     std::unique_ptr<test::TestHeadersHandler> headers_handler;
     std::unique_ptr<QpackProgressiveDecoder> progressive_decoder;
     uint64_t stream_id;
diff --git a/quic/core/qpack/qpack_test_utils.h b/quic/core/qpack/qpack_test_utils.h
index 7011e88..b898f9b 100644
--- a/quic/core/qpack/qpack_test_utils.h
+++ b/quic/core/qpack/qpack_test_utils.h
@@ -27,7 +27,7 @@
     FragmentMode fragment_mode);
 
 // Mock QpackUnidirectionalStreamSenderDelegate implementation.
-class QUIC_EXPORT_PRIVATE MockQpackStreamSenderDelegate
+class /*QUIC_EXPORT_PRIVATE*/ MockQpackStreamSenderDelegate
     : public QpackStreamSenderDelegate {
  public:
   ~MockQpackStreamSenderDelegate() override = default;
diff --git a/quic/platform/api/quic_test_mem_slice_vector.h b/quic/platform/api/quic_test_mem_slice_vector.h
index ed416b7..d06a8ac 100644
--- a/quic/platform/api/quic_test_mem_slice_vector.h
+++ b/quic/platform/api/quic_test_mem_slice_vector.h
@@ -18,7 +18,7 @@
 // Tests using QuicTestMemSliceVector need to make sure the actual data buffers
 // outlive QuicTestMemSliceVector, and QuicTestMemSliceVector outlive the
 // returned QuicMemSliceSpan.
-class QUIC_EXPORT_PRIVATE QuicTestMemSliceVector {
+class /*QUIC_EXPORT_PRIVATE*/ QuicTestMemSliceVector {
  public:
   explicit QuicTestMemSliceVector(std::vector<std::pair<char*, size_t>> buffers)
       : impl_(std::move(buffers)) {}