diff --git a/src/test/java/org/embulk/input/kintone/TestKintoneAccessor.java b/src/test/java/org/embulk/input/kintone/TestKintoneAccessor.java
index f706a52..e168a0e 100644
--- a/src/test/java/org/embulk/input/kintone/TestKintoneAccessor.java
+++ b/src/test/java/org/embulk/input/kintone/TestKintoneAccessor.java
@@ -106,7 +106,7 @@ public Record createTestRecord()
         testRecord.putField("作成日時", new CreatedTimeFieldValue(ZonedDateTime.parse("2012-01-11T11:30:00Z")));
         testRecord.putField("更新者", new ModifierFieldValue(modifier));
         testRecord.putField("更新日時", new UpdatedTimeFieldValue(ZonedDateTime.parse("2012-01-11T11:30:00Z")));
-        testRecord.putField("計算", new CalcFieldValue(new BigDecimal("1.23E-12")));
+        testRecord.putField("計算", new CalcFieldValue("1.23E-12"));
         FileBody body1 = new FileBody();
         body1.setFileKey("sample_file1");
         FileBody body2 = new FileBody();