diff --git a/libs/backends/wavesaudio/waves_audiobackend.cc b/libs/backends/wavesaudio/waves_audiobackend.cc
index f8dc61f222..2b0a98f236 100644
--- a/libs/backends/wavesaudio/waves_audiobackend.cc
+++ b/libs/backends/wavesaudio/waves_audiobackend.cc
@@ -749,8 +749,12 @@ WavesAudioBackend::_audio_device_callback (const float* input_buffer,
 	    AudioEngine::thread_init_callback (this);
     }
     
-    if (_main_thread != pthread_self() ) {
+    if (pthread_equal (_main_thread, pthread_self()) != 0) {
+#ifdef PTW32_VERSION
+            std::cerr << "Process thread ID has changed. Expected thread: " << _main_thread.p <<  " current thread: " << pthread_self().p << std::dec << " !" << std::endl;
+#else
             std::cerr << "Process thread ID has changed. Expected thread: " << _main_thread <<  " current thread: " << pthread_self() << std::dec << " !" << std::endl;
+#endif
             _main_thread = pthread_self();
     }
 
diff --git a/libs/backends/wavesaudio/wavesapi/devicemanager/WCMRNativeAudio.cpp b/libs/backends/wavesaudio/wavesapi/devicemanager/WCMRNativeAudio.cpp
index f3565e2546..2e0490b02e 100644
--- a/libs/backends/wavesaudio/wavesapi/devicemanager/WCMRNativeAudio.cpp
+++ b/libs/backends/wavesaudio/wavesapi/devicemanager/WCMRNativeAudio.cpp
@@ -35,7 +35,9 @@
 //**********************************************************************************************
 WCMRNativeAudioNoneDevice::WCMRNativeAudioNoneDevice (WCMRAudioDeviceManager *pManager)
 	: WCMRNativeAudioDevice (pManager, false /*useMultiThreading*/)
+#ifndef PTW32_VERSION
 	, m_SilenceThread(0)
+#endif
 #if defined (PLATFORM_WINDOWS)
     , _waitableTimerForUsleep (CreateWaitableTimer(NULL, TRUE, NULL))
 #endif