diff --git a/include/grabber/video/mediafoundation/MFGrabber.h b/include/grabber/video/mediafoundation/MFGrabber.h
index 30142069..7ece840c 100644
--- a/include/grabber/video/mediafoundation/MFGrabber.h
+++ b/include/grabber/video/mediafoundation/MFGrabber.h
@@ -98,17 +98,17 @@ private:
 	void start_capturing();
 	void process_image(const void *frameImageBuffer, int size);
 
-	QString										_currentDeviceName,
+	QString								_currentDeviceName,
 												_newDeviceName;
-	QMap<QString, QList<DeviceProperties>>		_deviceProperties;
+	QMap<QString, QList<DeviceProperties>>	_deviceProperties;
 	QMap<QString, QList<DeviceControls>>		_deviceControls;
-	HRESULT										_hr;
-	IMFSourceReader*							_sourceReader;
-	SourceReaderCB*								_sourceReaderCB;
-	EncoderThreadManager*						_threadManager;
-	PixelFormat									_pixelFormat,
+	HRESULT								_hr;
+	IMFSourceReader*			_sourceReader;
+	SourceReaderCB*				_sourceReaderCB;
+	EncoderThreadManager*	_threadManager;
+	PixelFormat						_pixelFormat,
 												_pixelFormatConfig;
-	int											_lineLength,
+	int										_lineLength,
 												_frameByteSize,
 												_noSignalCounterThreshold,
 												_noSignalCounter,
@@ -116,13 +116,13 @@ private:
 												_contrast,
 												_saturation,
 												_hue;
-	QAtomicInt									_currentFrame;
-	ColorRgb									_noSignalThresholdColor;
-	bool										_signalDetectionEnabled,
-												_noSignalDetected,
+	QAtomicInt						_currentFrame;
+	ColorRgb							_noSignalThresholdColor;
+	bool									_signalDetectionEnabled,
+												_signalDetected,
 												_initialized,
 												_reload;
-	double										_x_frac_min,
+	double								_x_frac_min,
 												_y_frac_min,
 												_x_frac_max,
 												_y_frac_max;
diff --git a/include/grabber/video/v4l2/V4L2Grabber.h b/include/grabber/video/v4l2/V4L2Grabber.h
index 75b375df..5ac00738 100644
--- a/include/grabber/video/v4l2/V4L2Grabber.h
+++ b/include/grabber/video/v4l2/V4L2Grabber.h
@@ -158,7 +158,7 @@ private:
 	// signal detection
 	int      _noSignalCounterThreshold;
 	ColorRgb _noSignalThresholdColor;
-	bool     _standbyActivated, _signalDetectionEnabled, _noSignalDetected;
+	bool     _standbyActivated, _signalDetectionEnabled, _signalDetected;
 	int      _noSignalCounter;
 	int		_brightness, _contrast, _saturation, _hue;
 	double   _x_frac_min;
diff --git a/libsrc/grabber/video/mediafoundation/MFGrabber.cpp b/libsrc/grabber/video/mediafoundation/MFGrabber.cpp
index 0a7e04a2..1cacf4aa 100644
--- a/libsrc/grabber/video/mediafoundation/MFGrabber.cpp
+++ b/libsrc/grabber/video/mediafoundation/MFGrabber.cpp
@@ -42,7 +42,7 @@ MFGrabber::MFGrabber()
 	, _currentFrame(0)
 	, _noSignalThresholdColor(ColorRgb{0,0,0})
 	, _signalDetectionEnabled(true)
-	, _noSignalDetected(true)
+	, _signalDetected(false)
 	, _initialized(false)
 	, _reload(false)
 	, _x_frac_min(0.25)
@@ -580,7 +580,7 @@ void MFGrabber::newThreadFrame(Image<ColorRgb> image)
 		{
 			if (_noSignalCounter >= _noSignalCounterThreshold)
 			{
-				_noSignalDetected = false;
+				_signalDetected = true;
 				Info(_log, "Signal detected");
 			}
 
@@ -593,7 +593,7 @@ void MFGrabber::newThreadFrame(Image<ColorRgb> image)
 		}
 		else if (_noSignalCounter == _noSignalCounterThreshold)
 		{
-			_noSignalDetected = true;
+			_signalDetected = false;
 			Info(_log, "Signal lost");
 		}
 	}
diff --git a/libsrc/grabber/video/v4l2/V4L2Grabber.cpp b/libsrc/grabber/video/v4l2/V4L2Grabber.cpp
index 8fbf552a..d4a73ab9 100644
--- a/libsrc/grabber/video/v4l2/V4L2Grabber.cpp
+++ b/libsrc/grabber/video/v4l2/V4L2Grabber.cpp
@@ -81,7 +81,7 @@ V4L2Grabber::V4L2Grabber()
 	, _noSignalThresholdColor(ColorRgb{0,0,0})
 	, _standbyActivated(false)
 	, _signalDetectionEnabled(true)
-	, _noSignalDetected(true)
+	, _signalDetected(false)
 	, _noSignalCounter(0)
 	, _brightness(0)
 	, _contrast(0)
@@ -1060,7 +1060,7 @@ void V4L2Grabber::newThreadFrame(Image<ColorRgb> image)
 		{
 			if (_noSignalCounter >= _noSignalCounterThreshold)
 			{
-				_noSignalDetected = false;
+				_signalDetected = true;
 				Info(_log, "Signal detected");
 			}
 
@@ -1073,7 +1073,7 @@ void V4L2Grabber::newThreadFrame(Image<ColorRgb> image)
 		}
 		else if (_noSignalCounter == _noSignalCounterThreshold)
 		{
-			_noSignalDetected = true;
+			_signalDetected = false;
 			Info(_log, "Signal lost");
 		}
 	}