diff --git a/Software/PC_Application/LibreVNA-GUI/Calibration/LibreCAL/usbdevice.h b/Software/PC_Application/LibreVNA-GUI/Calibration/LibreCAL/usbdevice.h
index e1c78cf2..94b8bfe3 100644
--- a/Software/PC_Application/LibreVNA-GUI/Calibration/LibreCAL/usbdevice.h
+++ b/Software/PC_Application/LibreVNA-GUI/Calibration/LibreCAL/usbdevice.h
@@ -3,11 +3,6 @@
 
 #include "Util/usbinbuffer.h"
 
-#ifdef Q_OS_MACOS
-#include <libusb.h>
-#else
-#include <libusb-1.0/libusb.h>
-#endif
 #include <QString>
 #include <set>
 #include <functional>
diff --git a/Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/librevnausbdriver.h b/Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/librevnausbdriver.h
index 8a7614d9..5f5921f1 100644
--- a/Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/librevnausbdriver.h
+++ b/Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/librevnausbdriver.h
@@ -4,11 +4,6 @@
 #include "librevnadriver.h"
 #include "Util/usbinbuffer.h"
 
-#ifdef Q_OS_MACOS
-#include <libusb.h>
-#else
-#include <libusb-1.0/libusb.h>
-#endif
 #include <thread>
 
 #include <QQueue>
diff --git a/Software/PC_Application/LibreVNA-GUI/Util/usbinbuffer.h b/Software/PC_Application/LibreVNA-GUI/Util/usbinbuffer.h
index 5f1f5c39..0018cb2d 100644
--- a/Software/PC_Application/LibreVNA-GUI/Util/usbinbuffer.h
+++ b/Software/PC_Application/LibreVNA-GUI/Util/usbinbuffer.h
@@ -1,6 +1,8 @@
 #ifndef USBINBUFFER_H
 #define USBINBUFFER_H
 
+#include <qglobal.h>
+
 #ifdef Q_OS_MACOS
 #include <libusb.h>
 #else