diff --git a/webmagic-selenium/src/main/java/us/codecraft/webmagic/downloader/selenium/WebDriverPool.java b/webmagic-selenium/src/main/java/us/codecraft/webmagic/downloader/selenium/WebDriverPool.java
index 98b93a9..f628ede 100644
--- a/webmagic-selenium/src/main/java/us/codecraft/webmagic/downloader/selenium/WebDriverPool.java
+++ b/webmagic-selenium/src/main/java/us/codecraft/webmagic/downloader/selenium/WebDriverPool.java
@@ -87,4 +87,5 @@ class WebDriverPool {
             webDriver.quit();
         }
     }
+
 }