diff --git a/rds_mysql/stored_procedure/crm_history.sql b/rds_mysql/stored_procedure/crm_history.sql
index 366cde70..10bb0095 100644
--- a/rds_mysql/stored_procedure/crm_history.sql
+++ b/rds_mysql/stored_procedure/crm_history.sql
@@ -70,7 +70,7 @@ BEGIN
 	-- 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 
-			JOIN $$target_table$$_make_history_tmp mht 
+			INNER JOIN $$target_table$$_make_history_tmp mht 
 				ON tt.id = mht.id 
 				AND tt.start_datetime = mht.min_start_datetime 
 		SET