diff --git a/src/ImageAcquisition.cpp b/src/ImageAcquisition.cpp
index ac314f40dbc51a134272489eb5c220216df8f05c..7186870910880576d6513e3a8661b03b79a7a978 100644
--- a/src/ImageAcquisition.cpp
+++ b/src/ImageAcquisition.cpp
@@ -259,8 +259,6 @@ void ImageAcquisition::frameCallbackInternal(char *pixelBuffer, size_t input, do
         latestSlaveFrame.copyTo(entry.fieldFrame);
         slaveMutex.unlock();
 
-        Scalar m = mean(entry.leftEyeFrame);
-        gIntensity = m[0];
         entry.incIdx();
         emit imageAcquisitionDone(entry);
     }
diff --git a/src/ParallelPort.cpp b/src/ParallelPort.cpp
index 1a4d6b78d8f06704f697749479499bf142f350e7..a5e059e433fb579d67fee56e7828c69e9056d94f 100644
--- a/src/ParallelPort.cpp
+++ b/src/ParallelPort.cpp
@@ -67,9 +67,11 @@ void ParallelPort::poll()
         return;
 
     if (log->is_open()) {
-        WORD wData = fpInp32(888);
-        //*log << gTimer.timestamp() << "\t" << wData << std::endl;
-        *log << gTimer.timestamp() << "," << wData << "," << gIntensity << std::endl;
+        if (hInpOutDll) {
+            WORD wData = fpInp32(888);
+            *log << gTimer.timestamp() << "\t" << wData << std::endl;
+        }
+
     }
 }
 
diff --git a/src/utils.cpp b/src/utils.cpp
index ae189a0bb3fdaab4435ca50624fca3312761896e..4f189f4c91eb07639126283e107a04ef1a3d54aa 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -50,4 +50,3 @@ GlobalTimer gTimer;
 QString gBinaryPath = "";
 QString gCurrentSubjectName = "";
 QString gFileIndexStr = "0000";
-std::atomic<unsigned int> gIntensity = 0;
diff --git a/src/utils.h b/src/utils.h
index c2fac6ebc6cbcd22dd81540f8e8e7158006fa33c..393dfdcd7a60a41910bf327b613cb471d6281405 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -23,7 +23,6 @@ void exitBanner();
 extern QString gBinaryPath;
 extern QString gCurrentSubjectName;
 extern QString gFileIndexStr;
-extern std::atomic<unsigned int> gIntensity;
 extern GlobalTimer gTimer; // Only valid after first frame has been received!
 
 void logMessages(QtMsgType type, const QMessageLogContext &context, const QString &msg);