diff --git a/Detector.cpp b/Detector.cpp
index 3685235c1..2eda83781 100644
--- a/Detector.cpp
+++ b/Detector.cpp
@@ -31,8 +31,8 @@ void Detector::clear ()
   // jt9com_.kin = qMin ((msInPeriod * m_frameRate) / 1000, static_cast<unsigned> (sizeof (jt9com_.d2) / sizeof (jt9com_.d2[0])));
   jt9com_.kin = 0;
 
-  // fill buffer with zeros
-  qFill (jt9com_.d2, jt9com_.d2 + sizeof (jt9com_.d2) / sizeof (jt9com_.d2[0]), 0);
+  // fill buffer with zeros (G4WJS commented out because it might cause decoder hangs)
+  // qFill (jt9com_.d2, jt9com_.d2 + sizeof (jt9com_.d2) / sizeof (jt9com_.d2[0]), 0);
 }
 
 qint64 Detector::writeData (char const * data, qint64 maxSize)
diff --git a/mainwindow.cpp b/mainwindow.cpp
index bd8b4d4f2..c40f18436 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -1,4 +1,4 @@
-//--------------------------------------------------------------- MainWindow
+//---------------------------------------------------------------- MainWindow
 #include "mainwindow.h"
 #include "ui_mainwindow.h"