fix problamatic line

diff --git a/src/optional/monocypher-ed25519.c b/src/optional/monocypher-ed25519.c
index 5e4dcdf89daae7c214eddce47d498ad3ce1e6b47..1ac07466cf763ee25ded63fd7d1107ac24774177 100644 (file)
--- a/src/optional/monocypher-ed25519.c
+++ b/src/optional/monocypher-ed25519.c
@@ -441,7 +441,7 @@ static void hash_reduce(u8 h[32],
        crypto_eddsa_reduce(h, hash);
 }
 
-static void ed25519_dom_sign(u8 signature [64], const u8 secret_key[32],
+static void ed25519_dom_sign(u8 signature[64], const u8 secret_key[64],
                              const u8 *dom,     size_t dom_size,
                              const u8 *message, size_t message_size)
 {