diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5e35ca917cf91d49454a34b222d51a730b243786..3b3c015338ebc2a1f3e9ce34951e254fd3e436c9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -43,8 +43,8 @@ before_script:
 build_only:
   script:
     - cd slides
-    - make
-    - make deploy
+    - make SHELL=bash
+    - make deploy SHELL=bash
     - rsync -avz prog_seq_c_cours ur1bg_malas@ur1bg.ftp.infomaniak.com:web/malaspinas/
 
 build_artifacts: