diff --git a/directline-3.0.json b/directline-3.0.json
index 5df2fd0f..da4a4933 100644
--- a/directline-3.0.json
+++ b/directline-3.0.json
@@ -15,6 +15,7 @@
       "url": "https://opensource.org/licenses/MIT"
     }
   },
+  "host": "directline.botframework.com",
   "schemes": [
     "https"
   ],
diff --git a/src/util.ts b/src/util.ts
index dac4cc55..a9607ae0 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -75,10 +75,12 @@ export class GBUtil {
       }
     };
     if (!GBConfigService.get('STORAGE_NAME')) {
-      (config['url'] = `http://127.0.0.1:${GBConfigService.getServerPort()}/api/messages`),
-        (config['spec'].servers = [{ url: `http://127.0.0.1:${GBConfigService.getServerPort()}/api/messages` }]);
+      config['spec'].url = `http://127.0.0.1:${GBConfigService.getServerPort()}/api/messages`,
+      config['spec'].servers = [{ url: `http://127.0.0.1:${GBConfigService.getServerPort()}/api/messages` }];
       config['openapi'] = '3.0.0';
+      delete config['spec'].host;
     }
+
     return await new SwaggerClient(config);
   }