diff --git a/lib/backend/routes/set.js b/lib/backend/routes/set.js
index ea15d11..6c516d1 100644
--- a/lib/backend/routes/set.js
+++ b/lib/backend/routes/set.js
@@ -49,7 +49,7 @@ module.exports.POST = async function (req, res) {
       )
       await db['rooms.terrain'].update(
         { room },
-        { $set: { terrain } },
+        { $set: { terrain, type: "terrain" } },
         { upsert: true }
       )
       await map.updateRoomImageAssets(room)