1 files changed, 3 insertions, 1 deletions
diff --git a/defines.h b/defines.h
index 279e509..ed860e7 100644
--- a/defines.h
+++ b/defines.h
@@ -940,6 +940,8 @@ struct winsize {
  * so only enable if the compiler supports them.
  */
 #if defined(VARIABLE_LENGTH_ARRAYS) && defined(VARIABLE_DECLARATION_AFTER_CODE)
-# define USE_SNTRUP761X25519 1
+# define USE_SNTRUP761X25519	1
+/* The ML-KEM768 implementation also uses C89 features */
+# define USE_MLKEM768X25519	1
 #endif
 #endif /* _DEFINES_H */