diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1582510..f67d11f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,9 +19,8 @@ build_esp32:
   image: vato.ddns.net:8083/shaguarger/platformio
   stage: build
   script:
-    - cd esp32
     - platformio ci --board=esp32doit-devkit-v1
-    - cd ..
+  variables: {PLATFORMIO_CI_SRC: 'esp32/src/main.cpp'}
 
 deploy_pycar:
   image: vato.ddns.net:8083/python-infra:buster