diff --git a/rds_mysql/stored_procedure/crm_history.sql b/rds_mysql/stored_procedure/crm_history.sql
index caeb09c0..7c183714 100644
--- a/rds_mysql/stored_procedure/crm_history.sql
+++ b/rds_mysql/stored_procedure/crm_history.sql
@@ -17,7 +17,7 @@ BEGIN
 	EXECUTE make_history_tmp_create_stmt;
 
 	-- ②-2 「②-1」で取得した全件に更新処理を行う
-	SET @update_end_datetime = 'UPDATE @@target_table tt LEFT JOIN make_history_tmp mht ON tt.id = mht.id AND tt.start_datetime = mht.min_start_datetime SET start_datetime = mht.max_start_datetime - INTERVAL 1 SECOND WHERE mht.id IS NULL';
+	SET @update_end_datetime = 'UPDATE @@target_table tt LEFT JOIN make_history_tmp mht ON tt.id = mht.id AND tt.start_datetime = mht.min_start_datetime SET start_datetime = mht.max_start_datetime - INTERVAL 1 SECOND WHERE mht.id IS NOT NULL';
 	SET @update_end_datetime = REPLACE(@update_end_datetime, "@@target_table", target_table);
     SET @update_end_datetime = REPLACE(@update_end_datetime, "@@target_column", target_column);
 	PREPARE update_end_datetime_stmt from @update_end_datetime;