diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fb3d61886a3a37ec8004d671fe6ef024f533b817..c19861b5fb285e2f2bc7dbb6f777f84b7e74e525 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -53,7 +53,7 @@ prepare:
 deploy:firefox:beta:
   extends: .deploy:firefox
   variables:
-    - CHANNEL: unlisted
+    CHANNEL: unlisted
   only:
     - beta
 
@@ -61,7 +61,7 @@ deploy:firefox:beta:
 deploy:firefox:master:
   extends: .deploy:firefox
   variables:
-    - CHANNEL: listed
+    CHANNEL: listed
   only:
     - master