diff --git a/gui/kmixdockwidget.cpp b/gui/kmixdockwidget.cpp
index 3bda22e..fee74d9 100644
--- a/gui/kmixdockwidget.cpp
+++ b/gui/kmixdockwidget.cpp
@@ -347,10 +347,16 @@ KMixDockWidget::trayWheelEvent(int delta,Qt::Orientation wheelOrientation)
 
     if ( inc < 1 ) inc = 1;
 
+    if (delta < 0)
+    	inc = -inc;
+
     if (wheelOrientation == Qt::Horizontal) // Reverse horizontal scroll: bko228780 
-    	delta = -delta;
+    	inc = -inc;
 
-    long int cv = inc * (delta / 120 );
+    // bko313579 Do not use "delta", as that is setting more related to documents (Editor, Browser). KMix should
+    //           simply always use its own VOLUME_STEP_DIVISOR as a base for percentage change.
+    //long int cv = inc * (delta / 120 );
+    long cv = inc;
     bool isInactive =  vol.isCapture() ? !md->isRecSource() : md->isMuted();
     kDebug() << "Operating on capture=" << vol.isCapture() << ", isInactive=" << isInactive;
 	if ( cv > 0 && isInactive)