diff --git a/util/LLgen/src/io.h b/util/LLgen/src/io.h
index 8b4d68e1a..552f28867 100644
--- a/util/LLgen/src/io.h
+++ b/util/LLgen/src/io.h
@@ -16,7 +16,8 @@
  * Some important file names and variables
  */
 
-# include <stdio.h>
+#include <stdio.h>
+#include "types.h"
 
 /* FILES */
 
diff --git a/util/LLgen/src/machdep.c b/util/LLgen/src/machdep.c
index 34df65332..0fc29b277 100644
--- a/util/LLgen/src/machdep.c
+++ b/util/LLgen/src/machdep.c
@@ -18,7 +18,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
+#include <io.h>
 # include "extern.h"
 # include "types.h"