diff --git a/src/ConformToTheEnergySpectrum/ConformToTheEnergySpectrum.cpp b/src/ConformToTheEnergySpectrum/ConformToTheEnergySpectrum.cpp
index 6216766..6ff9bcf 100644
--- a/src/ConformToTheEnergySpectrum/ConformToTheEnergySpectrum.cpp
+++ b/src/ConformToTheEnergySpectrum/ConformToTheEnergySpectrum.cpp
@@ -86,10 +86,10 @@ void ConformToTheEnergySpectrum::SetAnalyzeDataFilename(const QMap<QString, QVar
 
 void ConformToTheEnergySpectrum::loadAndProcess()
 {
+    _busy_indicator->Start();
     auto functionToRun = [this]() {
-        if (_data_filename.isEmpty()) return;
-
-        _busy_indicator->Start();
+        if (_data_filename.isEmpty())
+            return;
 
         std::vector<SpectrumData> rawData;
         io::CSVReader<4> in(QStrToSysPath(_data_filename));
@@ -112,34 +112,16 @@ void ConformToTheEnergySpectrum::loadAndProcess()
         }
 
         if (rawData.empty()) {
-            _busy_indicator->Stop();
+            QMetaObject::invokeMethod(this, [this]() {
+                _busy_indicator->Stop();
+            }, Qt::QueuedConnection);
             return;
         }
 
-        //        const uint64_t TIME_WINDOW_NS = 50;
-        //        const int MIN_ORDER = 2;
-        //        const int MAX_ORDER = 9;
-        //        std::vector<CoincidenceEvent> coincidences = processCoincidence(rawData, TIME_WINDOW_NS, MIN_ORDER, MAX_ORDER);
-
-        //        if (coincidences.empty()) {
-        //            _busy_indicator->Stop();
-        //            return;
-        //        }
-
-        //        const int STEP = 1;
-        //        std::map<int, double> hist;
-
-        //        for (const auto& ev : coincidences) {
-        //            for (const auto& spdt : ev.events) {
-        //                int idx = static_cast<int>(spdt.energy) / STEP;
-        //                hist[idx] += 1.0;
-        //            }
-        //        }
-
         const int STEP = 1;
         std::map<int, double> hist;
 
-        for (const auto& spdt : rawData) {
+        for (const SpectrumData& spdt : rawData) {
             int idx = static_cast<int>(spdt.energy) / STEP;
             hist[idx] += 1.0;
         }
@@ -151,7 +133,9 @@ void ConformToTheEnergySpectrum::loadAndProcess()
         }
 
         if (vx.isEmpty()) {
-            _busy_indicator->Stop();
+            QMetaObject::invokeMethod(this, [this]() {
+                _busy_indicator->Stop();
+            }, Qt::QueuedConnection);
             return;
         }