1 files changed, 3 insertions, 3 deletions
diff --git a/cryptography/hazmat/bindings/openssl/hmac.py b/cryptography/hazmat/bindings/openssl/hmac.py
index 5f9e0945..4b81c9df 100644
--- a/cryptography/hazmat/bindings/openssl/hmac.py
+++ b/cryptography/hazmat/bindings/openssl/hmac.py
@@ -55,11 +55,11 @@ int Cryptography_HMAC_Update(HMAC_CTX *ctx, const unsigned char *data,
 }
 
 int Cryptography_HMAC_Final(HMAC_CTX *ctx, unsigned char *digest,
-    unsigned int *digest_len) {
+    unsigned int *outlen) {
 #if OPENSSL_VERSION_NUMBER >= 0x010000000
-    return HMAC_Final(ctx, digest, digest_len);
+    return HMAC_Final(ctx, digest, outlen);
 #else
-    HMAC_Final(ctx, digest, digest_len);
+    HMAC_Final(ctx, digest, outlen);
     return 1;
 #endif
 }