diff --git a/Documentation/dontdiff b/Documentation/dontdiff
index b974cf595d0..96bea278bbf 100644
--- a/Documentation/dontdiff
+++ b/Documentation/dontdiff
@@ -104,6 +104,7 @@ logo_*.c
 logo_*_clut224.c
 logo_*_mono.c
 lxdialog
+mach-types
 mach-types.h
 make_times_h
 map