diff --git a/Codec/Dragino-RS485-BL.txt b/Codec/Dragino-RS485-BL.js
similarity index 97%
rename from Codec/Dragino-RS485-BL.txt
rename to Codec/Dragino-RS485-BL.js
index bc9e171..811feb1 100644
--- a/Codec/Dragino-RS485-BL.txt
+++ b/Codec/Dragino-RS485-BL.js
@@ -29,4 +29,4 @@ function decodeUplink(input) {
 // - bytes = Byte array containing the downlink payload.
 function encodeDownlink(input) {
   return {bytes: []};
-}
\ No newline at end of file
+}