diff --git a/rtgui/histogrampanel.cc b/rtgui/histogrampanel.cc
index ec8f9a326..236f5af02 100644
--- a/rtgui/histogrampanel.cc
+++ b/rtgui/histogrampanel.cc
@@ -1457,10 +1457,19 @@ void HistogramArea::drawVectorscope(Cairo::RefPtr<Cairo::Context> &cr, int w, in
                 cx = w / 2.f + scope_size * pointer_a * ab_factor;
                 cy = h / 2.f - scope_size * pointer_b * ab_factor;
             }
-            cr->arc(cx, cy, 2 * s, 0, 2 * RT_PI);
-            cr->set_source_rgb(0, 0, 0);
-            cr->fill_preserve();
+            cr->set_source_rgba(1, 1, 1, 0.5);
+            cr->set_dash(ch_ds, 0);
+            cr->move_to(0, cy);
+            cr->line_to(w, cy);
+            cr->move_to(cx, 0);
+            cr->line_to(cx, h);
+            cr->stroke();
+            cr->unset_dash();
+            cr->arc(cx, cy, 3 * s, 0, 2 * RT_PI);
             cr->set_source_rgb(1, 1, 1);
+            cr->fill_preserve();
+            cr->set_source_rgb(0, 0, 0);
+            cr->set_line_width (1.0 * s);
             cr->stroke();
         }
     }