diff --git a/src/index.ts b/src/index.ts
index 40cc3c0..bab6e31 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -13,11 +13,10 @@ const sendEvent = async (
   const requestBody = {
     event_source: payload.event_source || 'web',
     event_source_id: payload.properties.pixelCode || settings.pixelCode,
+    test_event_code: settings.testKey,
     data: {
       ...payload,
-      ...(settings.testKey && {
-        test_event_code: settings.testKey,
-      }),
+      ...(settings.testKey && {}),
     },
   }