diff --git a/src/cryptonote_core/cryptonote_tx_utils.cpp b/src/cryptonote_core/cryptonote_tx_utils.cpp
index bf58a120d..706ca238e 100644
--- a/src/cryptonote_core/cryptonote_tx_utils.cpp
+++ b/src/cryptonote_core/cryptonote_tx_utils.cpp
@@ -697,7 +697,7 @@ namespace cryptonote
       }
       rx_slow_hash(hash.data, bd.data(), bd.size(), res.data);
     } else {
-      const int pow_variant = major_version >= 7 ? major_version - 6 : 0;
+      const int pow_variant = major_version >= 11 ? 4 : major_version >= 9 ? 2 : 1;
       crypto::cn_slow_hash(bd.data(), bd.size(), res, pow_variant, height);
     }
     return true;
diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index 41c6dc8d7..592ad8d92 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -1395,15 +1395,15 @@ namespace cryptonote
     if (lMiner.is_mining() || lMiner.get_is_background_mining_enabled())
       res.address = get_account_address_as_str(nettype(), false, lMiningAdr);
     const uint8_t major_version = m_core.get_blockchain_storage().get_current_hard_fork_version();
-    const unsigned variant = major_version >= 7 ? major_version - 6 : 0;
+    const unsigned variant = major_version >= 13 ? 6 : major_version >= 11 && major_version <= 12 ? 4 : 2;
     switch (variant)
     {
       case 0: res.pow_algorithm = "Cryptonight"; break;
       case 1: res.pow_algorithm = "CNv1 (Cryptonight variant 1)"; break;
       case 2: case 3: res.pow_algorithm = "CNv2 (Cryptonight variant 2)"; break;
-      case 4: case 5: res.pow_algorithm = "CNv4 (Cryptonight variant 4)"; break;
-      case 6: case 7: case 8: case 9: res.pow_algorithm = "RandomX"; break;
-      default: res.pow_algorithm = "RandomX"; break; // assumed
+      case 4: case 5: res.pow_algorithm = "CN/WOW"; break;
+      case 6: case 7: case 8: case 9: res.pow_algorithm = "RandomWOW"; break;
+      default: res.pow_algorithm = "RandomWOW"; break; // assumed
     }
     if (res.is_background_mining_enabled)
     {