diff --git a/lib/cpp/test/TransportTest.cpp b/lib/cpp/test/TransportTest.cpp
index 7f95e38..a932643 100644
--- a/lib/cpp/test/TransportTest.cpp
+++ b/lib/cpp/test/TransportTest.cpp
@@ -183,8 +183,8 @@
  public:
   CoupledZlibTransports() :
     buf(new TMemoryBuffer) {
-    in = new TZlibTransport(buf, false);
-    out = new TZlibTransport(buf, false);
+    in = new TZlibTransport(buf);
+    out = new TZlibTransport(buf);
   }
 
   ~CoupledZlibTransports() {
diff --git a/lib/cpp/test/ZlibTest.cpp b/lib/cpp/test/ZlibTest.cpp
index e2403d7..1e9f187 100644
--- a/lib/cpp/test/ZlibTest.cpp
+++ b/lib/cpp/test/ZlibTest.cpp
@@ -143,7 +143,7 @@
 
 void test_write_then_read(const uint8_t* buf, uint32_t buf_len) {
   shared_ptr<TMemoryBuffer> membuf(new TMemoryBuffer());
-  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf, false));
+  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf));
   zlib_trans->write(buf, buf_len);
   zlib_trans->finish();
 
@@ -162,12 +162,12 @@
   // the stream was not complete.  I'm about to go fix that.
   // It worked.  Awesome.
   shared_ptr<TMemoryBuffer> membuf(new TMemoryBuffer());
-  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf, false));
+  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf));
   zlib_trans->write(buf, buf_len);
   zlib_trans->finish();
   string tmp_buf;
   membuf->appendBufferToString(tmp_buf);
-  zlib_trans.reset(new TZlibTransport(membuf, false,
+  zlib_trans.reset(new TZlibTransport(membuf,
                                       TZlibTransport::DEFAULT_URBUF_SIZE,
                                       tmp_buf.length()-1));
 
@@ -182,7 +182,7 @@
   // Make sure we still get that "not complete" error if
   // it really isn't complete.
   shared_ptr<TMemoryBuffer> membuf(new TMemoryBuffer());
-  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf, false));
+  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf));
   zlib_trans->write(buf, buf_len);
   zlib_trans->finish();
   string tmp_buf;
@@ -209,7 +209,7 @@
                          const shared_ptr<SizeGenerator>& read_gen) {
   // Try it with a mix of read/write sizes.
   shared_ptr<TMemoryBuffer> membuf(new TMemoryBuffer());
-  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf, false));
+  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf));
   unsigned int tot;
 
   tot = 0;
@@ -244,7 +244,7 @@
 void test_invalid_checksum(const uint8_t* buf, uint32_t buf_len) {
   // Verify checksum checking.
   shared_ptr<TMemoryBuffer> membuf(new TMemoryBuffer());
-  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf, false));
+  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf));
   zlib_trans->write(buf, buf_len);
   zlib_trans->finish();
   string tmp_buf;
@@ -282,7 +282,7 @@
 void test_write_after_flush(const uint8_t* buf, uint32_t buf_len) {
   // write some data
   shared_ptr<TMemoryBuffer> membuf(new TMemoryBuffer());
-  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf, false));
+  shared_ptr<TZlibTransport> zlib_trans(new TZlibTransport(membuf));
   zlib_trans->write(buf, buf_len);
 
   // call finish()
@@ -321,7 +321,7 @@
   {
     // Create a TZlibTransport object, and immediately destroy it
     // when it goes out of scope.
-    TZlibTransport w_zlib_trans(membuf, false);
+    TZlibTransport w_zlib_trans(membuf);
   }
 
   BOOST_CHECK_EQUAL(membuf->available_read(), 0);