diff --git a/birdy-slim-iot/payload-formatters/testing.ttnv3.js b/birdy-slim-iot/payload-formatters/testing.ttnv3.js
index c645d88..62bd47d 100644
--- a/birdy-slim-iot/payload-formatters/testing.ttnv3.js
+++ b/birdy-slim-iot/payload-formatters/testing.ttnv3.js
@@ -1,9 +1 @@
-function decodeUplink(input) {
-  return {
-    data: Decoder(input.bytes, input.fPort),
-    warnings: [],
-    errors: []
-  };
-}
-
-/** Attach the Code of testing.ttnv2.js **/
+/** Use the Code of testing.ttnv2.js **/