diff --git a/src/proto.h b/src/proto.h
index a71b632..cb4add0 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -168,10 +168,7 @@
 void qsort(void *base, size_t elm_count, size_t elm_size, int (*cmp)(const void *, const void *));
 #endif
 # include "move.pro"
-# if defined(FEAT_MBYTE) || defined(FEAT_XIM) || defined(FEAT_KEYMAP) \
-	|| defined(FEAT_POSTSCRIPT)
-#  include "mbyte.pro"
-# endif
+# include "mbyte.pro"
 # include "normal.pro"
 # include "ops.pro"
 # include "option.pro"