3 files changed, 4 insertions, 4 deletions
diff --git a/src/ext/ed25519/ref10/ed25519_ref10.h b/src/ext/ed25519/ref10/ed25519_ref10.h
index 8c77b0e56b..af7e21a2ad 100644
--- a/src/ext/ed25519/ref10/ed25519_ref10.h
+++ b/src/ext/ed25519/ref10/ed25519_ref10.h
@@ -9,11 +9,11 @@ int ed25519_ref10_pubkey(unsigned char *pk,const unsigned char *sk);
 int ed25519_ref10_keygen(unsigned char *pk,unsigned char *sk);
 int ed25519_ref10_open(
   const unsigned char *signature,
-  const unsigned char *m,uint64_t mlen,
+  const unsigned char *m, size_t mlen,
   const unsigned char *pk);
 int ed25519_ref10_sign(
   unsigned char *sig,
-  const unsigned char *m,uint64_t mlen,
+  const unsigned char *m, size_t mlen,
   const unsigned char *sk, const unsigned char *pk);
 
 /* Added in Tor */
diff --git a/src/ext/ed25519/ref10/open.c b/src/ext/ed25519/ref10/open.c
index 0e7abba138..9dbeb4cdd0 100644
--- a/src/ext/ed25519/ref10/open.c
+++ b/src/ext/ed25519/ref10/open.c
@@ -9,7 +9,7 @@
 /* 'signature' must be 64-bytes long. */
 int crypto_sign_open(
   const unsigned char *signature,
-  const unsigned char *m,uint64_t mlen,
+  const unsigned char *m, size_t mlen,
   const unsigned char *pk
 )
 {
diff --git a/src/ext/ed25519/ref10/sign.c b/src/ext/ed25519/ref10/sign.c
index e37b0d192d..1190a0fc99 100644
--- a/src/ext/ed25519/ref10/sign.c
+++ b/src/ext/ed25519/ref10/sign.c
@@ -7,7 +7,7 @@
 
 int crypto_sign(
   unsigned char *sig,
-  const unsigned char *m,uint64_t mlen,
+  const unsigned char *m, size_t mlen,
   const unsigned char *sk,const unsigned char *pk
 )
 {