diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 21f51e7..c7e4626 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,3 +9,4 @@ production:
       - cd ${CI_PROJECT_DIR}
       - ls -lha /arduino-1.8.1/arduino
       - /arduino-1.8.1/arduino --verify blink.ino
+      - echo $?