diff --git a/action.yml b/action.yml
index 6bbb768..85ca823 100644
--- a/action.yml
+++ b/action.yml
@@ -40,7 +40,9 @@ runs:
     - name: Mirror to the AUR
       run: |
         mkdir -p ~/.ssh
-        printf '%s' '${{inputs.ssh_key}}' >~/.ssh/ssh_key
+        echo "-----BEGIN OPENSSH PRIVATE KEY-----" >~/.ssh/ssh_key
+        echo '${{inputs.ssh_key}}' >>~/.ssh/ssh_key
+        echo "-----END OPENSSH PRIVATE KEY-----" >>~/.ssh/ssh_key
         echo 'aur.archlinux.org ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEuBKrPzbawxA/k2g6NcyV5jmqwJ2s+zpgZGZ7tpLIcN' >>~/.ssh/known_hosts
         chmod 700 ~/.ssh
         chmod 600 ~/.ssh/*