diff --git a/packages/auth/src/Auth.ts b/packages/auth/src/Auth.ts
index 55a68af9..db8de32c 100644
--- a/packages/auth/src/Auth.ts
+++ b/packages/auth/src/Auth.ts
@@ -23,7 +23,9 @@ export class Auth {
       const serviceConfiguration: ServiceConfiguration = configuration[0];
       this.internalConfig = serviceConfiguration.config;
       // create a resource field containing the clientID. The keycloak JS adapter expects a clientId.
-      this.internalConfig.clientId = this.internalConfig.resource;
+      if (!this.internalConfig.clientId) {
+        this.internalConfig.clientId = this.internalConfig.resource;
+      }
       // use the top level keycloak url in the mobile services json
       this.internalConfig.url = serviceConfiguration.url;
     }