diff --git a/run_tcpdump.sh b/run_tcpdump.sh
index 1648c7af4..1c23343fa 100755
--- a/run_tcpdump.sh
+++ b/run_tcpdump.sh
@@ -1 +1,2 @@
+# Make sure that eth0 interface exists and supernode is connecting to 28900 port.
 nohup sudo tcpdump -i eth0 'port 28900' -v &> ./logs/tcpdump28900.log &
diff --git a/src/supernode/DAPI_RPC_Client.h b/src/supernode/DAPI_RPC_Client.h
index f9a5d894d..290d919e9 100644
--- a/src/supernode/DAPI_RPC_Client.h
+++ b/src/supernode/DAPI_RPC_Client.h
@@ -66,7 +66,7 @@ namespace supernode {
 
 	    	WasConnected = false;
 	    	if(!invoke(rpc_command::DAPI_URI, rpc_command::DAPI_METHOD, req_param, timeout, std::addressof(pri))) {
-                LOG_PRINT_L4("Failed to invoke http request to  " << call<<"  URI: "<<m_URI);
+                LOG_ERROR("Failed to invoke http request to  " << call<<"  URI: "<<m_URI);
 	    		return false;
 	    	}
 	    	WasConnected = true;
diff --git a/src/supernode/DAPI_RPC_Server.cpp b/src/supernode/DAPI_RPC_Server.cpp
index 8c6d47bc6..b18b1a46f 100644
--- a/src/supernode/DAPI_RPC_Server.cpp
+++ b/src/supernode/DAPI_RPC_Server.cpp
@@ -62,7 +62,7 @@ bool supernode::DAPI_RPC_Server::HandleRequest(const epee::net_utils::http::http
     epee::serialization::storage_entry id_ = epee::serialization::storage_entry(std::string());
 
     if( !ps.load_from_json(query_info.m_body) ) {
-        LOG_PRINT_L0("!load_from_json");
+        LOG_ERROR("!load_from_json");
 		response_info.m_response_code = 500;
 		response_info.m_response_comment = "Parse error";
     } else if( !ps.get_value("dapi_version", version, nullptr) ) {
@@ -108,8 +108,8 @@ bool supernode::DAPI_RPC_Server::HandleRequest(const epee::net_utils::http::http
     }
     LOG_PRINT_L2(response_info.m_body);
 
-    if(!handler) { LOG_PRINT_L4("handler not found for: "<<callback_name); return false; }
-    if( !handler->Process(ps, response_info.m_body) ) { LOG_PRINT_L4("Fail to process (ret false): "<<callback_name); return false; }
+    if(!handler) { LOG_ERROR("handler not found for: "<<callback_name); return false; }
+    if( !handler->Process(ps, response_info.m_body) ) { LOG_ERROR("Fail to process (ret false): "<<callback_name); return false; }
 
     response_info.m_mime_tipe = "application/json";
     response_info.m_header_info.m_content_type = " application/json";
diff --git a/src/supernode/PosProxy.cpp b/src/supernode/PosProxy.cpp
index cb2e6f1f2..58a9a8fdf 100644
--- a/src/supernode/PosProxy.cpp
+++ b/src/supernode/PosProxy.cpp
@@ -49,7 +49,7 @@ bool supernode::PosProxy::Sale(const rpc_command::POS_SALE::request& in, rpc_com
     if (!data->Init(in))
     {
         out.Result = ERROR_SALE_REQUEST_FAILED;
-        LOG_PRINT_L0("ERROR_SALE_REQUEST_FAILED");
+        LOG_ERROR("ERROR_SALE_REQUEST_FAILED");
         return false;
     }
 	Add(data);
diff --git a/src/supernode/PosSaleObject.cpp b/src/supernode/PosSaleObject.cpp
index ad15516ac..b504d03ec 100644
--- a/src/supernode/PosSaleObject.cpp
+++ b/src/supernode/PosSaleObject.cpp
@@ -133,7 +133,7 @@ void supernode::PosSaleObject::ContinueInit() {
 	inbr.SenderIP = m_DAPIServer->IP();
 	inbr.SenderPort = m_DAPIServer->Port();
 	if( !m_SubNetBroadcast.Send(dapi_call::PosProxySale, inbr, outv) || outv.empty() ) {
-        LOG_PRINT_L0("!Send dapi_call::PosProxySale");
+        LOG_ERROR("!Send dapi_call::PosProxySale");
 		m_Status = NTransactionStatus::Fail;
 
 	}