diff --git a/src/plot.cpp b/src/plot.cpp
--- a/src/plot.cpp
+++ b/src/plot.cpp
@@ -125,6 +125,8 @@ void Plot::resetAxes()
         setAxisScale(QwtPlot::yLeft, yMin, yMax);
     }
 
+    zoomer.setZoomBase();
+
     replot();
 }