diff --git a/src/puppet-web/browser.ts b/src/puppet-web/browser.ts
index 4589ae677d92e41bd9bc6f2b725f9a3ed0f7b180..c28b644d9ad0a26b6aba6a42fc79eb2e5059fe21 100644
--- a/src/puppet-web/browser.ts
+++ b/src/puppet-web/browser.ts
@@ -257,6 +257,7 @@ export class Browser extends EventEmitter {
               log.error('PuppetWebBrowser', 'clean() retryPromise() getBrowserPidList() failed: %s', e.message)
               reject(e)
             })
+      })
   }
 
   public getBrowserPidList(): Promise<number[]> {