diff --git a/src/oss_util.rs b/src/oss_util.rs
index 190b25d..a612cc7 100644
--- a/src/oss_util.rs
+++ b/src/oss_util.rs
@@ -11,11 +11,11 @@ use rust_util::{
 
 pub const DEFAULT_URL_VALID_IN_SECS: u64 = 1000;
 
-pub const OSS_VERB_GET: &str = "GET";
-pub const OSS_VERB_PUT: &str = "PUT";
+pub const OSS_VERB_GET:    &str = "GET";
+pub const OSS_VERB_PUT:    &str = "PUT";
 pub const OSS_VERB_DELETE: &str = "DELETE";
 
-const HTTP_SS: &str = "http://";
+const HTTP_SS:  &str = "http://";
 const HTTPS_SS: &str = "https://";
 
 const INTERNAL_DEFAULT_VALID_IN_SECS: u64 = 30;