diff --git a/package.nw/lib/gt.js b/package.nw/lib/gt.js
index 6c631c62..bfd67dc1 100644
--- a/package.nw/lib/gt.js
+++ b/package.nw/lib/gt.js
@@ -2384,7 +2384,7 @@ function setTrophyOverlay(which)
       {
         GT.layerVectors.gtflags.setVisible(false);
       }
-      if (GT.showAllGrids == false)
+      if (GT.mapSettings.showAllGrids == false)
       {
         GT.layerVectors.lineGrids.setVisible(false);
         GT.layerVectors.bigGrids.setVisible(false);