diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 77d143db4d..43bf3e49cf 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -74,7 +74,7 @@ public class DruidDataSource extends DruidDataAbstractSource implements DruidDat
         }
 
         try {
-            int maxWaitThreadCount = getMaxWaitThreadCount();
+            final int maxWaitThreadCount = getMaxWaitThreadCount();
             if (maxWaitThreadCount > 0) {
                 if (lock.getQueueLength() > maxWaitThreadCount) {
                     throw new SQLException("maxWaitThreadCount " + maxWaitThreadCount + ", current wait Thread count "