diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index ad352846..2a9dd3e9 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -454,6 +454,7 @@
         LEFT OUTER JOIN TB_CANVAS_ROOF_MATERIALS_ADD CR WITH (NOLOCK)
             ON P.OBJECT_NO = CR.OBJECT_NO
             AND P.PLAN_NO = CR.PLAN_NO
+            AND RE.ROOF_MATERIAL_ID = CR.ROOF_MATL_CD
         WHERE P.OBJECT_NO = #{objectNo}
             AND P.PLAN_NO = #{planNo}
     </select>