diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 73ab07630a246364d660afcddbd13c7458294f87..bb472494264f2e5f1f2e27590c290973414aea23 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,11 @@
 image: gitlab-registry.cern.ch/scouting-demonstrator/scouting-docker-images/scdaq-builder:1.0.1
 
+check_formatting:
+  stage: check
+  image: gitlab-registry.cern.ch/scouting-demonstrator/scouting-docker-images/scouting-devtools:1.0.0
+  script:
+    - find src/ -iname '*.h' -o -iname '*.cc' | xargs clang-format --style=file --dry-run -Werror
+
 build_rpm_tag:
   stage: build
   only:
@@ -32,6 +38,7 @@ run_filetest:
     - bash scripts/runFileTest.sh
     
 stages:
+    - check
     - build
     - run