diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index aa26bcbe..09fba332 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -371,7 +371,7 @@
             ON C1.HEAD_CD = '201900'
             AND RE.ROOF_MATERIAL_ID = C1.CODE
         LEFT OUTER JOIN M_COMM_L C2 WITH (NOLOCK)
-            ON C2.HEAD_CD = '202100'
+            ON C2.HEAD_CD = '203400'
             AND RE.SUPPORT_METHOD_ID = C2.CODE
         LEFT OUTER JOIN M_COMM_L C3 WITH (NOLOCK)
             ON C3.HEAD_CD = '201300'