diff --git a/firmware/esp32/main.cpp b/firmware/esp32/main.cpp
deleted file mode 100644
index e69de29..0000000
diff --git a/firmware/esp32/source/main.cpp b/firmware/esp32/source/main.cpp
new file mode 100644
index 0000000..a1fe59f
--- /dev/null
+++ b/firmware/esp32/source/main.cpp
@@ -0,0 +1,3 @@
+extern "C" void app_main(void)
+{
+}