diff --git a/desktop/sources/scripts/guide.js b/desktop/sources/scripts/guide.js
index 9cdb29c..00b1a3a 100644
--- a/desktop/sources/scripts/guide.js
+++ b/desktop/sources/scripts/guide.js
@@ -58,6 +58,8 @@ DOTGRID.Guide = function () {
   }
 
   this.draw_mirror = function () {
+    if (!this.show_extras) { return }
+
     if (DOTGRID.tool.style().mirror_style === 0) { return }
 
     const middle = { x: DOTGRID.tool.settings.size.width + (DOTGRID.grid_width), y: DOTGRID.tool.settings.size.height + (2 * DOTGRID.grid_height) }