diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 94b598cc3e..82092d4d8a 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -15,8 +15,6 @@
  */
 package com.alibaba.druid.pool;
 
-import java.io.PrintWriter;
-import java.io.StringWriter;
 import java.sql.Connection;
 import java.sql.Driver;
 import java.sql.SQLException;