diff --git a/.github/workflows/build-push.yml b/.github/workflows/build-push.yml
index 6d05978..388daaa 100644
--- a/.github/workflows/build-push.yml
+++ b/.github/workflows/build-push.yml
@@ -27,7 +27,7 @@ jobs:
       - name: Setup SSH key
         run: |
           install -m 600 -D /dev/null ~/.ssh/id_rsa
-          echo $SSH_PRIVATE_KEY > ~/.ssh/id_rsa
+          echo "$SSH_PRIVATE_KEY" > ~/.ssh/id_rsa
           ssh-keyscan -H $SSH_HOST > ~/.ssh/known_hosts
         shell: bash
         env: