diff --git a/src/main/java/com/alibaba/druid/filter/Filter.java b/src/main/java/com/alibaba/druid/filter/Filter.java
index a7f4845231..b7ec85617c 100644
--- a/src/main/java/com/alibaba/druid/filter/Filter.java
+++ b/src/main/java/com/alibaba/druid/filter/Filter.java
@@ -46,7 +46,6 @@ import java.util.Properties;
 
 import com.alibaba.druid.pool.DruidDataSource;
 import com.alibaba.druid.pool.DruidPooledConnection;
-import com.alibaba.druid.proxy.config.AbstractDruidFilterConfig;
 import com.alibaba.druid.proxy.jdbc.CallableStatementProxy;
 import com.alibaba.druid.proxy.jdbc.ClobProxy;
 import com.alibaba.druid.proxy.jdbc.ConnectionProxy;