diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index 4383ad190..0e0f8d9fb 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -1312,6 +1312,7 @@ namespace cryptonote
     response.depth = m_core.get_current_blockchain_height() - height - 1;
     response.hash = string_tools::pod_to_hex(hash);
     response.difficulty = m_core.get_blockchain_storage().block_difficulty(height);
+    response.cumulative_difficulty = response.block_weight = m_core.get_blockchain_storage().get_db().get_block_cumulative_difficulty(height);
     response.reward = get_block_reward(blk);
     response.block_size = response.block_weight = m_core.get_blockchain_storage().get_db().get_block_weight(height);
     response.num_txes = blk.tx_hashes.size();
diff --git a/src/rpc/core_rpc_server_commands_defs.h b/src/rpc/core_rpc_server_commands_defs.h
index da4c8b6cf..8e2cec706 100644
--- a/src/rpc/core_rpc_server_commands_defs.h
+++ b/src/rpc/core_rpc_server_commands_defs.h
@@ -1197,6 +1197,7 @@ namespace cryptonote
       uint64_t depth;
       std::string hash;
       difficulty_type difficulty;
+      difficulty_type cumulative_difficulty;
       uint64_t reward;
       uint64_t block_size;
       uint64_t block_weight;
@@ -1214,6 +1215,7 @@ namespace cryptonote
         KV_SERIALIZE(depth)
         KV_SERIALIZE(hash)
         KV_SERIALIZE(difficulty)
+        KV_SERIALIZE(cumulative_difficulty)
         KV_SERIALIZE(reward)
         KV_SERIALIZE(block_size)
         KV_SERIALIZE_OPT(block_weight, (uint64_t)0)