diff --git a/data/preset_defaults.json b/data/preset_defaults.json
index 286b5b1..4978662 100644
--- a/data/preset_defaults.json
+++ b/data/preset_defaults.json
@@ -12,6 +12,7 @@
         "area"
     ],
     "line": [
+        "category-airroute_lowalt",        
         "category-road_major",
         "category-road_minor",
         "category-rail",