diff --git a/FL/win32.H b/FL/win32.H
index 95d3a2bb1..b866f0796 100644
--- a/FL/win32.H
+++ b/FL/win32.H
@@ -26,7 +26,6 @@
 #endif // !Fl_X_H
 
 #include <windows.h>
-#include "src/drivers/WinAPI/Fl_WinAPI_System_Driver.H"
 typedef HWND Window;
 
 #include <FL/Fl_Device.H>
diff --git a/FL/x.H b/FL/x.H
index 0642cd91f..2cbca6ca5 100644
--- a/FL/x.H
+++ b/FL/x.H
@@ -3,7 +3,7 @@
 //
 // X11 header file for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2012 by Bill Spitzak and others.
+// Copyright 1998-2016 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -49,8 +49,6 @@
 #    include <X11/Xatom.h>
 #    include "Fl_Window.H"
 
-#include <src/drivers/Posix/Fl_Posix_System_Driver.H>
-
 FL_EXPORT void fl_open_display();
 FL_EXPORT void fl_open_display(Display*);
 FL_EXPORT void fl_close_display();