diff --git a/Code/picocalc_keyboard/picocalc_keyboard.ino b/Code/picocalc_keyboard/picocalc_keyboard.ino
index 63573bb..0a8dad2 100644
--- a/Code/picocalc_keyboard/picocalc_keyboard.ino
+++ b/Code/picocalc_keyboard/picocalc_keyboard.ino
@@ -602,6 +602,7 @@ void setup() {
 //hp headphone
 void check_hp_det(){
   int v = digitalRead(PC12);
+  pinMode(PA14, OUTPUT);
   if(v == HIGH) {
     if( head_phone_status != v ) {
       Serial1.println("HeadPhone detected");