diff --git a/src/librepgp/stream-key.cpp b/src/librepgp/stream-key.cpp
index a1c68221..7c9a5c4e 100644
--- a/src/librepgp/stream-key.cpp
+++ b/src/librepgp/stream-key.cpp
@@ -788,6 +788,10 @@ decrypt_secret_key(pgp_key_pkt_t *key, const char *password)
             }
             ret = decrypt_secret_key_v3(&crypt, decdata.data(), key->sec_data, key->sec_len);
             break;
+#if defined(ENABLE_CRYPTO_REFRESH)
+        case PGP_V6:
+            FALLTHROUGH_STATEMENT;
+#endif
         case PGP_V4:
             pgp_cipher_cfb_decrypt(&crypt, decdata.data(), key->sec_data, key->sec_len);
             ret = RNP_SUCCESS;