From d82c9ca13aab6b76e45511506c72a298311b9f37 Mon Sep 17 00:00:00 2001
From: eschao <esc.chao@gmail.com>
Date: Fri, 15 Dec 2017 13:57:51 +0800
Subject: [PATCH] don't set default value when parsing env

---
 env/env.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/env/env.go b/env/env.go
index 98245b0..8343d3d 100644
--- a/env/env.go
+++ b/env/env.go
@@ -104,7 +104,7 @@ func setFieldValue(v reflect.Value, f reflect.StructField, prefix string) error
 		return nil
 	}
 
-	envValue, ok := getEnvValue(prefix+envName, f)
+	envValue, ok := os.LookupEnv(prefix + envName)
 	if !ok {
 		return nil
 	}