diff --git a/.gitignore b/.gitignore
index b268261..ad4668e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@
 *.txt
 
 _docs/
+
+.iris/schema/
diff --git a/dimensions/flat.json b/dimensions/flat.json
index d6f5821..8fea9ba 100644
--- a/dimensions/flat.json
+++ b/dimensions/flat.json
@@ -2,8 +2,10 @@
     "name": "Flat",
     "version": 1,
     "environment": "NORMAL",
+    "mode": {
+        "type": "SUPERFLAT"
+    },
     "fluidHeight": 0,
-    "carving": false,
     "caves": false,
     "postProcessing": false,
     "decorate": false,