diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index a724246f..e4a7c977 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -48,24 +48,30 @@ namespace cryptonote
     return epee::http_server_impl_base<core_rpc_server, connection_context>::init(m_port, m_bind_ip);
   }
   //------------------------------------------------------------------------------------------------------------------------------
-  bool core_rpc_server::check_core_ready()
+  bool core_rpc_server::check_core_busy()
   {
-    if(!m_p2p.get_payload_object().is_synchronized())
-    {
-      return false;
-    }
     if(m_p2p.get_payload_object().get_core().get_blockchain_storage().is_storing_blockchain())
     {
       return false;
     }
     return true;
   }
+#define CHECK_CORE_BUSY() if(!check_core_busy()){res.status =  CORE_RPC_STATUS_BUSY;return true;}
+  //------------------------------------------------------------------------------------------------------------------------------
+  bool core_rpc_server::check_core_ready()
+  {
+    if(!m_p2p.get_payload_object().is_synchronized())
+    {
+      return false;
+    }
+    return check_core_busy();
+  }
 #define CHECK_CORE_READY() if(!check_core_ready()){res.status =  CORE_RPC_STATUS_BUSY;return true;}
 
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_height(const COMMAND_RPC_GET_HEIGHT::request& req, COMMAND_RPC_GET_HEIGHT::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     res.height = m_core.get_current_blockchain_height();
     res.status = CORE_RPC_STATUS_OK;
     return true;
@@ -73,7 +79,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_info(const COMMAND_RPC_GET_INFO::request& req, COMMAND_RPC_GET_INFO::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     res.height = m_core.get_current_blockchain_height();
     res.difficulty = m_core.get_blockchain_storage().get_difficulty_for_next_block();
     res.tx_count = m_core.get_blockchain_storage().get_total_transactions() - res.height; //without coinbase
@@ -90,7 +96,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_blocks(const COMMAND_RPC_GET_BLOCKS_FAST::request& req, COMMAND_RPC_GET_BLOCKS_FAST::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     std::list<std::pair<block, std::list<transaction> > > bs;
     if(!m_core.find_blockchain_supplement(req.block_ids, bs, res.current_height, res.start_height, COMMAND_RPC_GET_BLOCKS_FAST_MAX_COUNT))
     {
@@ -114,7 +120,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_random_outs(const COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS::request& req, COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     res.status = "Failed";
     if(!m_core.get_random_outs_for_amounts(req, res))
     {
@@ -143,7 +149,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_indexes(const COMMAND_RPC_GET_TX_GLOBAL_OUTPUTS_INDEXES::request& req, COMMAND_RPC_GET_TX_GLOBAL_OUTPUTS_INDEXES::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     bool r = m_core.get_tx_outputs_gindexs(req.txid, res.o_indexes);
     if(!r)
     {
@@ -157,7 +163,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_transactions(const COMMAND_RPC_GET_TRANSACTIONS::request& req, COMMAND_RPC_GET_TRANSACTIONS::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     std::vector<crypto::hash> vh;
     BOOST_FOREACH(const auto& tx_hex_str, req.txs_hashes)
     {
@@ -232,7 +238,6 @@ namespace cryptonote
       return true;
     }
 
-
     NOTIFY_NEW_TRANSACTIONS::request r;
     r.txs.push_back(tx_blob);
     m_core.get_protocol()->relay_transactions(r, fake_context);
@@ -265,7 +270,6 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_stop_mining(const COMMAND_RPC_STOP_MINING::request& req, COMMAND_RPC_STOP_MINING::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
     if(!m_core.get_miner().stop())
     {
       res.status = "Failed, mining not stopped";
@@ -295,7 +299,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_save_bc(const COMMAND_RPC_SAVE_BC::request& req, COMMAND_RPC_SAVE_BC::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     if( !m_core.get_blockchain_storage().store_blockchain() )
     {
       res.status = "Error while storing blockhain";
@@ -307,7 +311,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_getblockcount(const COMMAND_RPC_GETBLOCKCOUNT::request& req, COMMAND_RPC_GETBLOCKCOUNT::response& res, connection_context& cntx)
   {
-    CHECK_CORE_READY();
+    CHECK_CORE_BUSY();
     res.count = m_core.get_current_blockchain_height();
     res.status = CORE_RPC_STATUS_OK;
     return true;
@@ -315,7 +319,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_getblockhash(const COMMAND_RPC_GETBLOCKHASH::request& req, COMMAND_RPC_GETBLOCKHASH::response& res, epee::json_rpc::error& error_resp, connection_context& cntx)
   {
-    if(!check_core_ready())
+    if(!check_core_busy())
     {
       error_resp.code = CORE_RPC_ERROR_CODE_CORE_BUSY;
       error_resp.message = "Core is busy";
@@ -473,7 +477,7 @@ namespace cryptonote
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_last_block_header(const COMMAND_RPC_GET_LAST_BLOCK_HEADER::request& req, COMMAND_RPC_GET_LAST_BLOCK_HEADER::response& res, epee::json_rpc::error& error_resp, connection_context& cntx)
   {
-    if(!check_core_ready())
+    if(!check_core_busy())
     {
       error_resp.code = CORE_RPC_ERROR_CODE_CORE_BUSY;
       error_resp.message = "Core is busy.";
@@ -508,7 +512,7 @@ namespace cryptonote
   }
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_block_header_by_hash(const COMMAND_RPC_GET_BLOCK_HEADER_BY_HASH::request& req, COMMAND_RPC_GET_BLOCK_HEADER_BY_HASH::response& res, epee::json_rpc::error& error_resp, connection_context& cntx){
-    if(!check_core_ready())
+    if(!check_core_busy())
     {
       error_resp.code = CORE_RPC_ERROR_CODE_CORE_BUSY;
       error_resp.message = "Core is busy.";
@@ -549,7 +553,7 @@ namespace cryptonote
   }
   //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_block_header_by_height(const COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::request& req, COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::response& res, epee::json_rpc::error& error_resp, connection_context& cntx){
-    if(!check_core_ready())
+    if(!check_core_busy())
     {
       error_resp.code = CORE_RPC_ERROR_CODE_CORE_BUSY;
       error_resp.message = "Core is busy.";
diff --git a/src/rpc/core_rpc_server.h b/src/rpc/core_rpc_server.h
index 0f8f69b9..abd9e3de 100644
--- a/src/rpc/core_rpc_server.h
+++ b/src/rpc/core_rpc_server.h
@@ -76,6 +76,7 @@ namespace cryptonote
     bool on_get_block_header_by_height(const COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::request& req, COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::response& res, epee::json_rpc::error& error_resp, connection_context& cntx);
     //-----------------------
     bool handle_command_line(const boost::program_options::variables_map& vm);
+    bool check_core_busy();
     bool check_core_ready();
     
     //utils