diff --git a/imageroot/actions/upload-certificate/23export_certificates b/imageroot/actions/upload-certificate/23export_certificates
index fff4e23..a390c88 100755
--- a/imageroot/actions/upload-certificate/23export_certificates
+++ b/imageroot/actions/upload-certificate/23export_certificates
@@ -31,11 +31,11 @@ result = subprocess.run(
 )
 
 subject = result.stdout
-domain = subject.split("\n")[1].split("CN=")[1]
+domain = {'main': subject.split("\n")[1].split("CN=")[1]}
 
 # save the certificate and key in redis
 rdb = agent.redis_connect(privileged=True)
-rkey = f'module/{module_id}/certificate/{domain}'
+rkey = f'module/{module_id}/certificate/{domain["main"]}'
 rdb.hset(rkey, mapping={"cert": data["certFile"], "key": data["keyFile"], "custom": "true"})
 
 # signal the certificate-updated event