diff --git a/src/plot.h b/src/plot.h
--- a/src/plot.h
+++ b/src/plot.h
@@ -56,6 +56,7 @@ private:
 public slots:
     void showGrid(bool show = true);
     void showMinorGrid(bool show = true);
+    void showLegend(bool show = true);
     void unzoom();
     void darkBackground(bool enabled = true);
     void setAxis(bool autoScaled, double yMin = 0, double yMax = 1);