diff --git a/cubesatsim/esp32-cam-send-jpeg-serial/esp32-cam-send-jpeg-serial.ino b/cubesatsim/esp32-cam-send-jpeg-serial/esp32-cam-send-jpeg-serial.ino
index 48e71b35..06ca3b44 100644
--- a/cubesatsim/esp32-cam-send-jpeg-serial/esp32-cam-send-jpeg-serial.ino
+++ b/cubesatsim/esp32-cam-send-jpeg-serial/esp32-cam-send-jpeg-serial.ino
@@ -50,6 +50,8 @@ char file_buf[50000];
 int file_len;
 bool file_flag = false;
 camera_fb_t *pic;
+File inFile;
+File outFile;
 
 // example code from https://github.com/espressif/arduino-esp32/blob/master/libraries/LittleFS/examples/LITTLEFS_test/LITTLEFS_test.ino
 //