diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f785c50..0c964f7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,7 +25,7 @@ synchro-et-tests:
     - rsync -avzlh images/ /var/lib/gsl/domains/chalec.org/images/
     - files=(git diff-tree --no-commit-id --name-only -r $CI_COMMIT_SHA)
     - cd /home/webmaster/articles
-    - [ ! gsl check | grep "Err" ]
+    - [ ! -z "$(gsl check | grep Err)" ]
     - gsl sync wip
 
 
@@ -37,6 +37,6 @@ deploiement:      # This job runs in the deploy stage.
       for postfile in $(ls *.gsl)
       do
         echo "Construction de $postfile"
-        [ ! gsl make $postfile | grep "Err" ]
+        [ ! -z "$(gsl make $postfile | grep Err)"" ]
       done
     - echo "Déploiement terminé."
\ No newline at end of file