1 files changed, 1 insertions, 1 deletions
diff --git a/test/color_chooser.cxx b/test/color_chooser.cxx
index f5c9827cc..3b62fa059 100644
--- a/test/color_chooser.cxx
+++ b/test/color_chooser.cxx
@@ -89,7 +89,7 @@ class Image_Box: public Fl_Box {
 public:
   Image_Box(int x, int y, int w, int h, const char *label = nullptr)
   : Fl_Box(x, y, w, h, label) { }
-  int handle(int event) {
+  int handle(int event)  override {
     if (event == FL_BEFORE_TOOLTIP) {
       const char *color_name_lut[] = { "blue", "green", "black", "red" };
       int quadrant = (Fl::event_x() < x()+w()/2) + 2*(Fl::event_y() < y()+h()/2);