diff --git a/src/main/java/cokr/xit/applib/ogdp/dao/OgdpMapper.java b/src/main/java/cokr/xit/applib/ogdp/dao/OgdpMapper.java
index 4697a34..e1dd6a2 100644
--- a/src/main/java/cokr/xit/applib/ogdp/dao/OgdpMapper.java
+++ b/src/main/java/cokr/xit/applib/ogdp/dao/OgdpMapper.java
@@ -461,6 +461,9 @@ public interface OgdpMapper extends AbstractMapper {
 			        </if>
 			    </where>
 		""";
-		return 	select + req.getSelectAdd() + fromWhere;
+
+		String selectAdd = req.getSelectAdd() == null ? "" : req.getSelectAdd();
+
+		return 	select + selectAdd + fromWhere;
 	}
 }