diff --git a/Add-own-functionality.md b/Add-own-functionality.md
index 4c438f3..b3d0ebb 100644
--- a/Add-own-functionality.md
+++ b/Add-own-functionality.md
@@ -1,7 +1,7 @@
 This page is intended for those wishing to modify the WLED code to add their own functionality.
 
 ### Basics
-Programming is done in the Arduino IDE. There is a special file, `wled06_usermod.ino`, to write your own code.
+Programming is done in the Arduino IDE. There is a special file, `usermod.cpp`, to write your own code.
 (however, if you think your code may be relevant to many users, feel free to code it in directly and open a pull request)
 
 This file has three empty methods: