diff --git a/src/bios_reader/bios_reader.c b/src/bios_reader/bios_reader.c
index 974c272e..717f5bfe 100644
--- a/src/bios_reader/bios_reader.c
+++ b/src/bios_reader/bios_reader.c
@@ -39,9 +39,7 @@
 #include "../i830_bios.h"
 
 #include <X11/Xfuncproto.h>
-typedef uint8_t CARD8;
-typedef uint16_t CARD16;
-typedef uint32_t CARD32;
+#include <X11/Xmd.h>
 #define _PARSE_EDID_
 #include "edid.h"