diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index 156fbc87db..3b284e46cd 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -24,6 +24,8 @@
 #define MINUTE_30 1800000    //ms
 #define TIME_OUT  5000       //ms
 
+#define ORCA_NETWORK_DEBUG
+
 namespace pt = boost::property_tree;
 
 float string_to_float(const std::string& str_value) {
@@ -2773,6 +2775,10 @@ static ENUM enum_index_of(char const *key, char const **enum_names, int enum_cou
 
 int MachineObject::parse_json(std::string payload, bool key_field_only)
 {
+#ifdef ORCA_NETWORK_DEBUG
+    BOOST_LOG_TRIVIAL(info) << "parse_json: payload = " << payload;
+#endif
+
     parse_msg_count++;
     std::chrono::system_clock::time_point clock_start = std::chrono::system_clock::now();
     this->set_online_state(true);