diff --git a/.github/workflows/ubuntu_test.yml b/.github/workflows/ubuntu_test.yml
index d94d045ea98..dc984eaa698 100644
--- a/.github/workflows/ubuntu_test.yml
+++ b/.github/workflows/ubuntu_test.yml
@@ -33,8 +33,8 @@ jobs:
         PUSH_DOCKER_IMAGE: ${{ github.ref == 'refs/heads/master' || github.event_name == 'release' }}
         BASEDIR: /opt
         PREFIX: ${{ github.repository }}_
-        DEBIAN_FRONTEND=noninteractive
-        TZ=Etc/UTC
+        DEBIAN_FRONTEND: noninteractive
+        TZ: Etc/UTC
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2