diff --git a/plotview.cpp b/plotview.cpp
index 636cf5b..ca14828 100644
--- a/plotview.cpp
+++ b/plotview.cpp
@@ -114,18 +114,6 @@ void PlotView::invalidateEvent()
     horizontalScrollBar()->setMaximum(mainSampleSource->count());
 }
 
-void PlotView::selectionChanged(std::pair<off_t, off_t> selectionTime, std::pair<float, float> selectionFreq)
-{
-    this->selectionTime = selectionTime;
-    this->selectionFreq = selectionFreq;
-    selection = true;
-}
-
-void PlotView::selectionCleared()
-{
-    selection = false;
-}
-
 void PlotView::setFFTSize(int size)
 {
     fftSize = size;
diff --git a/plotview.h b/plotview.h
index 7a7da49..1117ad2 100644
--- a/plotview.h
+++ b/plotview.h
@@ -43,8 +43,6 @@ public slots:
     void cursorsMoved();
     void enableCursors(bool enable);
     void invalidateEvent();
-    void selectionChanged(std::pair<off_t, off_t> selectionTime, std::pair<float, float> selectionFreq);
-    void selectionCleared();
     void setFFTSize(int size);
     void setZoomLevel(int zoom);
     void setPowerMin(int power);
@@ -63,7 +61,7 @@ private:
     std::vector<std::unique_ptr<Plot>> plots;
     std::pair<off_t, off_t> viewRange;
     bool selection = false;
-    std::pair<off_t, off_t> selectionTime;
+    range_t<off_t> selectionTime;
     std::pair<float, float> selectionFreq;
 
     int fftSize;
diff --git a/util.h b/util.h
index 94ee8fa..5b7a3a8 100644
--- a/util.h
+++ b/util.h
@@ -28,8 +28,8 @@ template <class T> const T& clamp (const T& value, const T& min, const T& max)
 
 template<class T>
 struct range_t {
-    const T minimum;
-    const T maximum;
+    T minimum;
+    T maximum;
 
     const T length() {
         return maximum - minimum;