diff --git a/common/fltk/src/Fl_win32.cxx b/common/fltk/src/Fl_win32.cxx
index d4ada8b..b36f307 100644
--- a/common/fltk/src/Fl_win32.cxx
+++ b/common/fltk/src/Fl_win32.cxx
@@ -553,11 +553,12 @@
 };
 
 void fl_update_clipboard(void) {
-  HWND hwnd = fl_xid(Fl::first_window());
-
-  if (!hwnd)
+  Fl_Window *w1 = Fl::first_window();
+  if (!w1)
     return;
 
+  HWND hwnd = fl_xid(w1);
+
   if (!OpenClipboard(hwnd))
     return;