diff --git a/hit2023v2/keithley_thr.cpp b/hit2023v2/keithley_thr.cpp
index e003315..c2931df 100644
--- a/hit2023v2/keithley_thr.cpp
+++ b/hit2023v2/keithley_thr.cpp
@@ -92,7 +92,7 @@ keithley_thr::~keithley_thr()
 //************************** slots for communication with worker thread ******************
 
     //called on each current readout
-keithley_thr::on_currentReadout(const double value)
+void keithley_thr::on_currentReadout(const double value)
 {
     lastCurrentReadout = value;
     emit esig_newCurrentReadout(lastCurrentReadout);
diff --git a/hit2023v2/keithley_thr.h b/hit2023v2/keithley_thr.h
index 8bab4cf..fe30173 100644
--- a/hit2023v2/keithley_thr.h
+++ b/hit2023v2/keithley_thr.h
@@ -65,7 +65,7 @@ public:
 
     int recognizeSpillState(double current);
 public slots:
-    on_currentReadout(const double value);
+    void on_currentReadout(const double value);
     int on_isOpen(const int state, const QString givenPortName);
 signals:
     void sig_connect();
diff --git a/hit2023v2/release/hit2023v2.exe b/hit2023v2/release/hit2023v2.exe
index 963797a..97f28f3 100644
Binary files a/hit2023v2/release/hit2023v2.exe and b/hit2023v2/release/hit2023v2.exe differ