diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 752b64e..e38e072 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -31,7 +31,7 @@ synchro-et-tests:
       do
         echo "Test de $file"
         stl log clean
-        stl check $file | grep -e "Err" -e "erreur de" -e "Aucun fichier" && errors=$((errors+1)) # error if err is read in standard output
+        stl check -F $file | grep -e "Err" -e "erreur de" -e "Aucun fichier" && errors=$((errors+1)) # error if err is read in standard output
       done
       [ $errors -gt 0 ] && false
       for file in $files