diff --git a/examples/shapedwindow.cxx b/examples/shapedwindow.cxx
index 4863cae52..384a5561c 100644
--- a/examples/shapedwindow.cxx
+++ b/examples/shapedwindow.cxx
@@ -20,6 +20,7 @@
 #include <FL/Fl_Button.H>
 #include <FL/Fl_Box.H>
 #include <FL/Fl.H>
+#include <FL/fl_draw.H>
 #include <FL/Fl_Double_Window.H>
 #include <FL/Fl_Image.H>
 #include <FL/Fl_Tiled_Image.H>