diff --git a/Xinerama.h b/Xinerama.h
index 2ab2d99..9ccc400 100644
--- a/Xinerama.h
+++ b/Xinerama.h
@@ -1,4 +1,4 @@
-/* $XdotOrg$ */
+/* $XdotOrg: xc/include/extensions/Xinerama.h,v 1.2 2004/04/23 18:43:06 eich Exp $ */
 /*
 
 Copyright 2003  The Open Group
@@ -29,6 +29,8 @@ in this Software without prior written authorization from The Open Group.
 #ifndef _Xinerama_h
 #define _Xinerama_h
 
+#include <X11/Xlib.h>
+
 typedef struct {
    int   screen_number;
    short x_org;