diff --git a/src/Fl_Overlay_Window.cxx b/src/Fl_Overlay_Window.cxx
index 556688eb7..65ab3beaa 100644
--- a/src/Fl_Overlay_Window.cxx
+++ b/src/Fl_Overlay_Window.cxx
@@ -22,7 +22,7 @@
 // possible, otherwise it just draws in the front buffer.
 
 #include <config.h>
-#include <FL/Fl.H>g
+#include <FL/Fl.H>
 #include <FL/Fl_Overlay_Window.H>
 #include <FL/fl_draw.H>
 #include <FL/x.H>