diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientGenerator.java b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientGenerator.java
index 167a5e1c..94b00cc7 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientGenerator.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientGenerator.java
@@ -36,7 +36,7 @@ import java.util.Map;
  */
 public class HttpClientGenerator {
 
-    private transient Logger logger = LoggerFactory.getLogger(getClass());
+    private Logger logger = LoggerFactory.getLogger(getClass());
 
     private PoolingHttpClientConnectionManager connectionManager;