diff --git a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java
index 791ace6d7d559fb0f56abc774195d933555ff8f8..e569de10cf7894aa04fc3cb5bdb8354b581d5a93 100644
--- a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java
+++ b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java
@@ -5,7 +5,7 @@ import java.util.Properties;
 
 public class JDBCDemo {
     private static String host;
-    private static String driverType;
+    private static String driverType = "jni";
     private static final String dbName = "test";
     private static final String tbName = "weather";
     private Connection connection;