diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d3502479b18050267897aecd0e3d176006ac9312..8ad50856f511987205a321e715aa4755f1320b21 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -99,7 +99,7 @@ build-dev:
     - schedules
     - web
   variables:
-    - BASEHREF=/cassiopee/$CI_COMMIT_REF_NAME/
+    - BASEHREF: "/cassiopee/$CI_COMMIT_REF_NAME/"
 
 build-prod:
   extends: .build
@@ -107,7 +107,7 @@ build-prod:
     - tags
     - devel
   variables:
-    - BASEHREF=/
+    - BASEHREF: "/"
 
 clean-stale-branches:
   stage: clean-stale-branches