diff --git a/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSourceMBean.java b/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSourceMBean.java
index 7bddfbf3ed..65519c7940 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSourceMBean.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSourceMBean.java
@@ -96,6 +96,8 @@ public interface DruidAbstractDataSourceMBean {
     long getCreateErrorCount();
 
     int getMaxActive();
+    
+    void setMaxActive(int maxActive);
 
     long getTimeBetweenConnectErrorMillis();