diff --git a/Source/RunActivity/Viewer3D/Map/MapForm.cs b/Source/RunActivity/Viewer3D/Map/MapForm.cs
index 901eb64aa..6f5e000e4 100644
--- a/Source/RunActivity/Viewer3D/Map/MapForm.cs
+++ b/Source/RunActivity/Viewer3D/Map/MapForm.cs
@@ -1624,6 +1624,7 @@ private void setSignalMenu_ItemClicked(object sender, ToolStripItemClickedEventA
                     break;
             }
 
+            mapCanvas.Invalidate(); // Triggers a re-paint
             UnHandleItemPick();
         }
 
@@ -1668,6 +1669,7 @@ private void setSwitchMenu_ItemClicked(object sender, ToolStripItemClickedEventA
                         break;
                 }
             }
+            mapCanvas.Invalidate(); // Triggers a re-paint
             UnHandleItemPick();
         }