diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBStatement.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBStatement.java
index 777eef53d180db5905ca13b1a9a393a05c1dd83b..e82886431332d602b68646865fb1fd18f3fa5dbd 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBStatement.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBStatement.java
@@ -158,7 +158,7 @@ public class TSDBStatement implements Statement {
             throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
         } else if (resultSetPointer == TSDBConstants.JNI_NULL_POINTER) {
             // no result set is retrieved
-			this.connecter.freeResultSet(pSql);
+            this.connecter.freeResultSet(pSql);
             res = false;
         }