diff --git a/docs/stirling.svg b/docs/stirling.svg
index 964f91950..1a14a42f0 100644
--- a/docs/stirling.svg
+++ b/docs/stirling.svg
@@ -233,7 +233,7 @@
      inkscape:groupmode="layer"
      id="layer4"
      inkscape:label="background"
-     style="display:none"
+     style="display:inline"
      sodipodi:insensitive="true"
      transform="translate(-51.420144,-44.470286)"><rect
        style="display:inline;fill:#ccd6d7;fill-opacity:1;stroke:none;stroke-width:4.13755;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:3.2"