diff --git a/ci/release.yml b/ci/release.yml
index 59dca7d..0f1160c 100644
--- a/ci/release.yml
+++ b/ci/release.yml
@@ -78,6 +78,9 @@ stages:
       - group: CPythonTestSign
     - ${{ elseif eq(parameters.SigningCertificate, 'PythonSoftwareFoundation') }}:
       - group: CPythonSign
+    - ${{ else }}:
+      - name: TrustedSigningCertificateSubject
+        value: CN=00000000-0000-0000-0000-000000000000
 
 
     steps: