diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index b861c4960..b4053ae78 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -2766,7 +2766,7 @@ int MachineObject::parse_json(std::string payload)
 
         uint64_t t_utc = j.value("t_utc", 0ULL);
         if (t_utc > 0) 
-            last_update_time = std::chrono::system_clock::time_point(t_utc * 1ms);
+            last_utc_time = std::chrono::system_clock::time_point(t_utc * 1ms);
 
         BOOST_LOG_TRIVIAL(trace) << "parse_json: dev_id=" << dev_id << ", playload=" << j.dump(4);
 
diff --git a/src/slic3r/GUI/DeviceManager.hpp b/src/slic3r/GUI/DeviceManager.hpp
index 50387b003..51687eaf3 100644
--- a/src/slic3r/GUI/DeviceManager.hpp
+++ b/src/slic3r/GUI/DeviceManager.hpp
@@ -463,6 +463,7 @@ public:
     int  parse_msg_count = 0;
     int  keep_alive_count = 0;
     std::chrono::system_clock::time_point   last_update_time;   /* last received print data from machine */
+    std::chrono::system_clock::time_point   last_utc_time;   /* last received print data from machine */
     std::chrono::system_clock::time_point   last_keep_alive;    /* last received print data from machine */
     std::chrono::system_clock::time_point   last_push_time;     /* last received print push from machine */
     std::chrono::system_clock::time_point   last_request_push;  /* last received print push from machine */
diff --git a/src/slic3r/GUI/StatusPanel.cpp b/src/slic3r/GUI/StatusPanel.cpp
index 33cd58cd4..d2d7358dd 100644
--- a/src/slic3r/GUI/StatusPanel.cpp
+++ b/src/slic3r/GUI/StatusPanel.cpp
@@ -1944,7 +1944,7 @@ void StatusPanel::update(MachineObject *obj)
     m_project_task_panel->Thaw();
 
 #if !BBL_RELEASE_TO_PUBLIC
-    auto delay1  = std::chrono::duration_cast<std::chrono::milliseconds>(obj->last_update_time - std::chrono::system_clock::now()).count();
+    auto delay1  = std::chrono::duration_cast<std::chrono::milliseconds>(obj->last_utc_time - std::chrono::system_clock::now()).count();
     auto delay2  = std::chrono::duration_cast<std::chrono::milliseconds>(obj->last_push_time - std::chrono::system_clock::now()).count();
     auto delay = wxString::Format(" %ld/%ld", delay1, delay2);
     m_staticText_timelapse