diff --git a/.gitea/workflows/test_infra.yaml b/.gitea/workflows/test_infra.yaml
index ca4ce8f..5a382a6 100644
--- a/.gitea/workflows/test_infra.yaml
+++ b/.gitea/workflows/test_infra.yaml
@@ -16,7 +16,7 @@ jobs:
           SSH_AUTH_SOCK: /tmp/ssh_agent.sock
         run: |
           ssh-agent -a $SSH_AUTH_SOCK > /dev/null
-          ssh-add - <<< ${{ secrets.SSH_PRIVATE_KEY }}
+          ssh-add - <<< "${{ secrets.SSH_PRIVATE_KEY }}"
 
       - name: init containers
         env: