diff --git a/tests/polygon-winding/in.json b/tests/polygon-winding/in.json
index c736d69..06b9a87 100644
--- a/tests/polygon-winding/in.json
+++ b/tests/polygon-winding/in.json
@@ -1,4 +1,6 @@
-     {
+{ "type": "Feature",
+     "properties": {},
+     "geometry": {
          "type": "Polygon",
          "coordinates": [
              [
@@ -17,3 +19,4 @@
              ]
          ]
      }
+}