diff --git a/plugins/vst_base/RemoteVstPlugin.cpp b/plugins/vst_base/RemoteVstPlugin.cpp
index ef85fbd48..cc441ce77 100644
--- a/plugins/vst_base/RemoteVstPlugin.cpp
+++ b/plugins/vst_base/RemoteVstPlugin.cpp
@@ -1860,10 +1860,12 @@ int main( int _argc, char * * _argv )
 	}
 
 #ifdef LMMS_BUILD_WIN32
+#ifndef __WINPTHREADS_VERSION
 	// (non-portable) initialization of statically linked pthread library
 	pthread_win32_process_attach_np();
 	pthread_win32_thread_attach_np();
 #endif
+#endif
 
 #ifdef LMMS_BUILD_LINUX
 #ifdef LMMS_HAVE_SCHED_H
@@ -1897,8 +1899,10 @@ int main( int _argc, char * * _argv )
 
 
 #ifdef LMMS_BUILD_WIN32
+#ifndef __WINPTHREADS_VERSION
 	pthread_win32_thread_detach_np();
 	pthread_win32_process_detach_np();
+#endif
 #endif
 
 	return 0;
diff --git a/plugins/zynaddsubfx/LocalZynAddSubFx.cpp b/plugins/zynaddsubfx/LocalZynAddSubFx.cpp
index 05b6a725e..586481b82 100644
--- a/plugins/zynaddsubfx/LocalZynAddSubFx.cpp
+++ b/plugins/zynaddsubfx/LocalZynAddSubFx.cpp
@@ -25,6 +25,7 @@
 #include <lmmsconfig.h>
 
 #include <unistd.h>
+#include <ctime>
 
 #include "LocalZynAddSubFx.h"
 
@@ -46,9 +47,11 @@ LocalZynAddSubFx::LocalZynAddSubFx()
 	if( s_instanceCount == 0 )
 	{
 #ifdef LMMS_BUILD_WIN32
+#ifndef __WINPTHREADS_VERSION
 		// (non-portable) initialization of statically linked pthread library
 		pthread_win32_process_attach_np();
 		pthread_win32_thread_attach_np();
+#endif
 #endif
 
 		initConfig();
diff --git a/plugins/zynaddsubfx/RemoteZynAddSubFx.cpp b/plugins/zynaddsubfx/RemoteZynAddSubFx.cpp
index e769594fa..2e4535d73 100644
--- a/plugins/zynaddsubfx/RemoteZynAddSubFx.cpp
+++ b/plugins/zynaddsubfx/RemoteZynAddSubFx.cpp
@@ -263,10 +263,12 @@ int main( int _argc, char * * _argv )
 	}
 
 #ifdef LMMS_BUILD_WIN32
+#ifndef __WINPTHREADS_VERSION
 	// (non-portable) initialization of statically linked pthread library
 	pthread_win32_process_attach_np();
 	pthread_win32_thread_attach_np();
 #endif
+#endif
 
 
 	RemoteZynAddSubFx * remoteZASF =
@@ -278,8 +280,10 @@ int main( int _argc, char * * _argv )
 
 
 #ifdef LMMS_BUILD_WIN32
+#ifndef __WINPTHREADS_VERSION
 	pthread_win32_thread_detach_np();
 	pthread_win32_process_detach_np();
+#endif
 #endif
 
 	return 0;