diff --git a/src/main/resources/mappers/user/userMapper.xml b/src/main/resources/mappers/user/userMapper.xml
index 13241e78..3b81b23e 100644
--- a/src/main/resources/mappers/user/userMapper.xml
+++ b/src/main/resources/mappers/user/userMapper.xml
@@ -234,7 +234,7 @@
             ) VALUES (
                   #{userId}
                 , #{saleStoreId}
-                , SUBSTRING(#{userId},0,31)
+                , SUBSTRING(#{userId},1,10)
                 , #{category}
                 , #{name}
                 , #{nameKana}