diff --git a/include/grub/aout.h b/include/grub/aout.h
index 10d7dde61..c8c1d94ec 100644
--- a/include/grub/aout.h
+++ b/include/grub/aout.h
@@ -52,6 +52,7 @@
 #define GRUB_AOUT_HEADER 1
 
 #include <grub/types.h>
+#include <grub/file.h>
 
 struct grub_aout32_header
 {