diff --git a/source/CaptureThread/AbstractFSController.cpp b/source/CaptureThread/AbstractFSController.cpp
index 38b9aa3..8496078 100644
--- a/source/CaptureThread/AbstractFSController.cpp
+++ b/source/CaptureThread/AbstractFSController.cpp
@@ -226,7 +226,7 @@ int CAbstractFSController::PerformAutoExposure()
 				dFactor = dTemp / (iDeviceDepth * m_fsInfo.fMaxFactor);
 				iExposureTime = (float)(iExposureTime / dFactor);
 			}
-			if (/*fExposureTime > 100 || */iExposureTime < 10)
+			if (/*fExposureTime > 100 || */iExposureTime < m_daDeviceAttr.iMinIntegrationTimeInMS)
 			{
 				bFlagIsAutoExposureOK = false;
 				bFlagIsAutoExposureFailed = true;
@@ -236,12 +236,12 @@ int CAbstractFSController::PerformAutoExposure()
 		bIsLastValueOverflow = bIsValueOverflow;
 		fLastExposureTime = fTempExposureTime;
 
-		if (iExposureTime > 120000)
+		if (iExposureTime > m_daDeviceAttr.iMaxIntegrationTimeInMS - 1)
 		{
 			bFlagIsAutoExposureOK = false;
 			bFlagIsAutoExposureFailed = true;
-			float fPredictedExposureTime = 120000;
-			iRes = m_pFSCtrl->SetExposureTime(120000);
+			float fPredictedExposureTime = m_daDeviceAttr.iMaxIntegrationTimeInMS-1;
+			iRes = m_pFSCtrl->SetExposureTime(m_daDeviceAttr.iMaxIntegrationTimeInMS-1);
 			if (iRes != 0)
 			{
 				qDebug() << "Err:PerformAutoExposure Failed.Exit Code:3" << " Thread ID:" << m_iThreadID;
@@ -250,7 +250,7 @@ int CAbstractFSController::PerformAutoExposure()
 			else
 			{
 				//qDebug() << "Warning:PerformAutoExposure exceed max integration time.Will be limited to 30sec";
-				qDebug() << "Warning:PerformAutoExposure exceed max integration time.Will be limited to " << m_daDeviceAttr.iMaxIntegrationTimeInMS << "MS" << " Thread ID:" << m_iThreadID;
+				qDebug() << "Warning:PerformAutoExposure exceed max integration time.Will be limited to " << m_daDeviceAttr.iMaxIntegrationTimeInMS-1 << "MS" << " Thread ID:" << m_iThreadID;
 			}
 			bFlagIsOverMaxExposureTime = true;
 			break;