diff --git a/src/main/java/com/aliyun/odps/jdbc/OdpsQueryResultSet.java b/src/main/java/com/aliyun/odps/jdbc/OdpsQueryResultSet.java
index b5b780cb..460528e3 100644
--- a/src/main/java/com/aliyun/odps/jdbc/OdpsQueryResultSet.java
+++ b/src/main/java/com/aliyun/odps/jdbc/OdpsQueryResultSet.java
@@ -197,7 +197,7 @@ public boolean isLast() throws SQLException {
   @Override
   public boolean last() throws SQLException {
     checkClosed();
-    cursorRow = totalRows;
+    cursorRow = totalRows - 1;
     return totalRows > 0;
   }