diff --git a/stand/efi/include/efidef.h b/stand/efi/include/efidef.h
index 5ca3c13e04c7..a8f88d41df24 100644
--- a/stand/efi/include/efidef.h
+++ b/stand/efi/include/efidef.h
@@ -63,6 +63,7 @@ typedef VOID            *EFI_EVENT;
     #define IN
     #define OUT
     #define OPTIONAL
+    #define CONST const
 #endif