diff --git a/Modules/Setup b/Modules/Setup
index e4acf6bc7de..ddf39e0b966 100644
--- a/Modules/Setup
+++ b/Modules/Setup
@@ -165,7 +165,7 @@ PYTHONPATH=$(COREPYTHONPATH)
 #pyexpat pyexpat.c
 
 # hashing builtins
-#_blake2 _blake2/blake2module.c _blake2/blake2b_impl.c _blake2/blake2s_impl.c
+#_blake2 blake2module.c -I$(srcdir)/Modules/_hacl/include Modules/_hacl/libHacl_Hash_Blake2.a
 #_md5 md5module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_MD5.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
 #_sha1 sha1module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_SHA1.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
 #_sha2 sha2module.c -I$(srcdir)/Modules/_hacl/include Modules/_hacl/libHacl_Hash_SHA2.a