diff --git a/src/main/resources/mappers/canvasBasicSetting/canvasBasicSettingMapper.xml b/src/main/resources/mappers/canvasBasicSetting/canvasBasicSettingMapper.xml
index 3e5dccc1..74c3fb68 100644
--- a/src/main/resources/mappers/canvasBasicSetting/canvasBasicSettingMapper.xml
+++ b/src/main/resources/mappers/canvasBasicSetting/canvasBasicSettingMapper.xml
@@ -29,7 +29,7 @@
 		  LEFT JOIN TB_CANVAS_ROOF_MATERIALS_ADD crma
 		    ON cbs.object_no = crma.object_no
 		 WHERE cbs.object_no = #{objectNo}
-		   <if test="roofSeq != '1'">
+		   <if test="roofSeq == 0">
             AND crma.roof_seq = 0
            </if>
     </select>