diff --git a/.github/workflows/o2-full-deps.yml b/.github/workflows/o2-full-deps.yml
index 47d7bb3f..0bcfca5b 100644
--- a/.github/workflows/o2-full-deps.yml
+++ b/.github/workflows/o2-full-deps.yml
@@ -119,7 +119,8 @@ jobs:
 
       - name: Build a DEB for Ubuntu and push it to the PPA
         run: |
-          export GPG_TTY=$(tty)
+          GPG_TTY=$(tty)
+          export GPG_TTY
           set -x
           git clone  https://github.com/alisw/alibuild
           cd alibuild