diff --git a/ttssh2/ttxssh/ed25519.c b/ttssh2/ttxssh/ed25519.c
index 9b12d4ce7..f20c7d334 100644
--- a/ttssh2/ttxssh/ed25519.c
+++ b/ttssh2/ttxssh/ed25519.c
@@ -113,6 +113,7 @@ int crypto_sign_ed25519_open(
 
   *mlen = (unsigned long long) -1;
   if (smlen < 64) return -1;
+  debug_print(43, sm, smlen);
 
   if (ge25519_unpackneg_vartime(&get1, pk)) return -1;
 
@@ -125,6 +126,7 @@ int crypto_sign_ed25519_open(
   ge25519_double_scalarmult_vartime(&get2, &get1, &schram, &ge25519_base, &scs);
   ge25519_pack(t2, &get2);
 
+  debug_print(44, t2, sizeof(t2));
   ret = crypto_verify_32(sm, t2);
 
   if (!ret)
diff --git a/ttssh2/ttxssh/key.c b/ttssh2/ttxssh/key.c
index 7d58b5e1e..81d1b530e 100644
--- a/ttssh2/ttxssh/key.c
+++ b/ttssh2/ttxssh/key.c
@@ -493,26 +493,23 @@ static int ssh_ed25519_verify(Key *key, unsigned char *signature, unsigned int s
 
 	ret = -1;
 	b = buffer_init();
-	if (b == NULL) {
-		MessageBox(NULL, "b == NULL", "debug", MB_OK);
+	if (b == NULL)
 		goto error;
-	}
+	debug_print(41, signature, signaturelen);
+	debug_print(42, data, datalen);
 
 	buffer_append(b, signature, signaturelen);
 	bptr = buffer_ptr(b);
 	ktype = buffer_get_string(&bptr, NULL);
 	if (strcmp("ssh-ed25519", ktype) != 0) {
-		MessageBox(NULL, "strcmp(\"ssh-ed25519\", ktype) != 0", "debug", MB_OK);
 		goto error;
 	}
 	sigblob = buffer_get_string(&bptr, &len);
 	rlen = buffer_remain_len(b);
 	if (rlen != 0) {
-		MessageBox(NULL, "rlen != 0", "debug", MB_OK);
 		goto error;
 	}
 	if (len > crypto_sign_ed25519_BYTES) {
-		MessageBox(NULL, "len > crypto_sign_ed25519_BYTES", "debug", MB_OK);
 		goto error;
 	}
 
@@ -522,29 +519,15 @@ static int ssh_ed25519_verify(Key *key, unsigned char *signature, unsigned int s
 	memcpy(sm+len, data, datalen);
 	mlen = smlen;
 	m = malloc((size_t)mlen);
-
-	{
-		char msg[256];
-		_snprintf_s(msg, sizeof(msg), _TRUNCATE,
-		            "signaturelen: %d, datalen: %d, len: %d, rlen: %d, smlen: %lld, mlen: %lld",
-		            signaturelen, datalen, len, rlen, smlen, mlen);
-		MessageBox(NULL, msg, "debug", MB_OK);
-	}
-
+	
 	if ((ret = crypto_sign_ed25519_open(m, &mlen, sm, smlen,
 	    key->ed25519_pk)) != 0) {
-		char msg[256];
-		_snprintf_s(msg, sizeof(msg), _TRUNCATE,
-		            "crypto_sign_ed25519_open failed: %d",
-		            ret);
-		MessageBox(NULL, msg, "debug", MB_OK);
 		//debug2("%s: crypto_sign_ed25519_open failed: %d",
 		//    __func__, ret);
 	}
 	if (ret == 0 && mlen != datalen) {
 		//debug2("%s: crypto_sign_ed25519_open "
 		//    "mlen != datalen (%llu != %u)", __func__, mlen, datalen);
-		MessageBox(NULL, "crypto_sign_ed25519_open(): mlen != datalen", "debug", MB_OK);
 		ret = -1;
 	}
 	/* XXX compare 'm' and 'data' ? */