diff --git a/.github/workflows/ci-mac.yml b/.github/workflows/ci-mac.yml
index 80f3227..6cf1ce2 100644
--- a/.github/workflows/ci-mac.yml
+++ b/.github/workflows/ci-mac.yml
@@ -16,7 +16,8 @@ jobs:
           node-version: 10.x
       - name: Run pre-build setup
         run: |
-          base64 --decode "$(ascCertificates)" > Certificates.p12
+          echo "$(ascCertificates)" > certs.b64
+          base64 --decode certs.b64 > Certificates.p12
           security add-generic-password -a "appleseed@marquiskurt.net" -w "$(ascPassword)" -s "AC_PASSWORD"
           security import Certificates.p12 -P "$(ascCertsPassword)" -k /Library/Keychains/System.keychain
         env: