diff --git a/include/servermd.h b/include/servermd.h
index 0132d67bf..c88a5428d 100644
--- a/include/servermd.h
+++ b/include/servermd.h
@@ -47,7 +47,10 @@ SOFTWARE.
 #ifndef SERVERMD_H
 #define SERVERMD_H 1
 
-#include "dix-config.h"
+#if !defined(_DIX_CONFIG_H_) && !defined(_XORG_SERVER_H_)
+#error Drivers must include xorg-server.h before any other xserver headers
+#error xserver code must include dix-config.h before any other headers
+#endif
 
 #if X_BYTE_ORDER == X_LITTLE_ENDIAN
 #define IMAGE_BYTE_ORDER        LSBFirst