diff --git a/src/barscaledraw.cpp b/src/barscaledraw.cpp
--- a/src/barscaledraw.cpp
+++ b/src/barscaledraw.cpp
@@ -27,6 +27,12 @@ BarScaleDraw::BarScaleDraw(ChannelManage
     enableComponent(Backbone, false);
     setLabelRotation(-90);
     setLabelAlignment(Qt::AlignLeft | Qt::AlignVCenter);
+
+    QObject::connect(_channelMan, &ChannelManager::channelNameChanged,
+            [this]()
+            {
+                invalidateCache();
+            });
 }
 
 QwtText BarScaleDraw::label(double value) const
@@ -34,8 +40,6 @@ QwtText BarScaleDraw::label(double value
     int index = value;
     unsigned numChannels = _channelMan->numOfChannels();
 
-    qDebug() << index;
-
     if (index >=0 && index < (int) numChannels)
     {
         return _channelMan->channelName(index);
@@ -45,8 +49,3 @@ QwtText BarScaleDraw::label(double value
         return QString("");
     }
 }
-
-void BarScaleDraw::updateLabels()
-{
-    invalidateCache();
-}