diff --git a/src/apps.js b/src/apps.js
index 77a70941f..301295e69 100644
--- a/src/apps.js
+++ b/src/apps.js
@@ -1421,7 +1421,7 @@ async function setCertificate(app, data, auditSource) {
         if (error) throw error;
     }
 
-    await reverseProxy.setAppCertificateSync(location, domainObject, { cert, key });
+    await reverseProxy.setAppCertificate(location, domainObject, { cert, key });
     await eventlog.add(eventlog.ACTION_APP_CONFIGURE, auditSource, { appId, app, cert, key });
 }