diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c5aa3e765caa8efefff4f6e852904a9bd48a7eb6..fb3d61886a3a37ec8004d671fe6ef024f533b817 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