diff --git a/src/AutoFilmESP32.ino b/src/AutoFilmESP32.cpp
similarity index 97%
rename from src/AutoFilmESP32.ino
rename to src/AutoFilmESP32.cpp
index 208354e..5b9eca0 100644
--- a/src/AutoFilmESP32.ino
+++ b/src/AutoFilmESP32.cpp
@@ -6,6 +6,7 @@
 #include "devSequence.h"
 #include "sound.h"
 #include "watchdog.h"
+#include <Arduino.h>
 
 // Function declarations
 void setup();