1 files changed, 3 insertions, 5 deletions

diff --git a/src/lib/libcrypto/ecdh/ech_key.c b/src/lib/libcrypto/ecdh/ech_key.c
index f4d20cd0ce..7d4fba76fe 100644
--- a/src/lib/libcrypto/ecdh/ech_key.c
+++ b/src/lib/libcrypto/ecdh/ech_key.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ech_key.c,v 1.25 2023/07/01 14:56:12 tb Exp $ */
+/* $OpenBSD: ech_key.c,v 1.26 2023/07/01 14:57:51 tb Exp $ */
 /* ====================================================================
  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  *
@@ -98,7 +98,7 @@ ossl_ecdh_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
         const BIGNUM *priv_key;
         const EC_GROUP* group;
         unsigned char *buf = NULL;
-        int buflen, len;
+        int buflen;
         int ret = -1;
 
         if (outlen > INT_MAX) {
@@ -141,9 +141,7 @@ ossl_ecdh_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
                 goto err;
         }
 
-        buflen = ECDH_size(ecdh);
-        len = BN_num_bytes(x);
-        if (len > buflen) {
+        if ((buflen = ECDH_size(ecdh)) < BN_num_bytes(x)) {
                 ECDHerror(ERR_R_INTERNAL_ERROR);
                 goto err;
         }