From 4f3c8b940e750a112d84c12a7833e9ffcc70cac9 Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Sun, 4 Nov 2018 23:13:35 +0900
Subject: [PATCH] [API] Fix #3099

---
 src/server/api/define.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/server/api/define.ts b/src/server/api/define.ts
index 38f20c0889..de9a8caf96 100644
--- a/src/server/api/define.ts
+++ b/src/server/api/define.ts
@@ -40,7 +40,7 @@ function getParams<T extends IEndpointMeta>(defs: T, params: any): [Params<T>, E
 			(err as any).param = k;
 			return true;
 		} else {
-			if (v === undefined && def.default) {
+			if (v === undefined && def.hasOwnProperty('default')) {
 				x[k] = def.default;
 			} else {
 				x[k] = v;