diff --git a/stempayload/Payload_BME280_MPU6050_XS_Extended/Payload_BME280_MPU6050_XS_Extended.ino b/stempayload/Payload_BME280_MPU6050_XS_Extended/Payload_BME280_MPU6050_XS_Extended.ino
index 4d873b33..d686e08d 100644
--- a/stempayload/Payload_BME280_MPU6050_XS_Extended/Payload_BME280_MPU6050_XS_Extended.ino
+++ b/stempayload/Payload_BME280_MPU6050_XS_Extended/Payload_BME280_MPU6050_XS_Extended.ino
@@ -63,8 +63,8 @@ bool show_gps = true;  // set to false to not see all  messages
 float flon = 0.0, flat = 0.0, flalt = 0.0;
 void get_gps();
 
-void payload_setup();
-void payload_loop()
+extern void payload_setup();
+extern void payload_loop()
 
 void setup() {