diff --git a/hw/xfree86/os-support/solaris/sun_agp.c b/hw/xfree86/os-support/solaris/sun_agp.c
index 126415e6e..32c4f47bc 100644
--- a/hw/xfree86/os-support/solaris/sun_agp.c
+++ b/hw/xfree86/os-support/solaris/sun_agp.c
@@ -37,7 +37,7 @@
 
 #pragma ident	"@(#)sun_agp.c	1.1	05/04/04 SMI"
 
-#include "X.h"
+#include <X11/X.h>
 #include "xf86.h"
 #include "xf86Priv.h"
 #include "xf86_OSlib.h"