diff --git a/kem/schemes/schemes.go b/kem/schemes/schemes.go
index 27097c4..582d307 100644
--- a/kem/schemes/schemes.go
+++ b/kem/schemes/schemes.go
@@ -82,6 +82,15 @@ var allSchemes = [...]kem.Scheme{
 		mlkem768.Scheme(),
 	),
 
+	combiner.New(
+		"x25519-mceliece8192128f-ctidh512",
+		[]kem.Scheme{
+			adapter.FromNIKE(x25519.Scheme(rand.Reader)),
+			mceliece8192128f.Scheme(),
+			adapter.FromNIKE(ctidh512.Scheme()),
+		},
+	),
+
 	combiner.New(
 		"sntrup4591761-X25519",
 		[]kem.Scheme{