diff --git a/desktop/sources/scripts/renderer.js b/desktop/sources/scripts/renderer.js
index 73e7f9f..509706f 100644
--- a/desktop/sources/scripts/renderer.js
+++ b/desktop/sources/scripts/renderer.js
@@ -68,10 +68,10 @@ function Renderer (dotgrid) {
     const middle = { x: dotgrid.tool.settings.size.width + 15, y: dotgrid.tool.settings.size.height + 15 }
 
     if (dotgrid.tool.style().mirror_style === 1 || dotgrid.tool.style().mirror_style === 3 || dotgrid.tool.settings.crest === true) {
-      this.drawRule({ x: middle.x, y: 15 * this.scale }, { x: middle.x, y: (dotgrid.tool.settings.size.height + 15) * this.scale })
+      this.drawRule({ x: middle.x, y: 15 * this.scale }, { x: middle.x, y: (dotgrid.tool.settings.size.height) * this.scale })
     }
     if (dotgrid.tool.style().mirror_style === 2 || dotgrid.tool.style().mirror_style === 3 || dotgrid.tool.settings.crest === true) {
-      this.drawRule({ x: 15 * this.scale, y: middle.y }, { x: (dotgrid.tool.settings.size.width + 15) * this.scale, y: middle.y })
+      this.drawRule({ x: 15 * this.scale, y: middle.y }, { x: (dotgrid.tool.settings.size.width) * this.scale, y: middle.y })
     }
   }