diff --git a/src/cmd_info.rs b/src/cmd_info.rs
index 1f40eda..13cd256 100644
--- a/src/cmd_info.rs
+++ b/src/cmd_info.rs
@@ -75,7 +75,7 @@ pub fn info_single(path: &PathBuf, cmd_info: &CmdInfo) -> XResult<()> {
         envelops.iter().enumerate().for_each(|(i, envelop)| {
             infos.push(format!("{}: {}",
                                header(&format!("Envelop #{}", i + 1)),
-                               util_envelop::format_envelop_with_type_with(envelop, &config, Some(10))
+                               util_envelop::format_envelop(envelop, &config)
             ));
         })
     }
diff --git a/src/util_envelop.rs b/src/util_envelop.rs
index ae0e19a..b0e78e8 100644
--- a/src/util_envelop.rs
+++ b/src/util_envelop.rs
@@ -1,11 +1,9 @@
+use rust_util::iff;
+
 use crate::config::{TinyEncryptConfig, TinyEncryptConfigEnvelop};
 use crate::spec::TinyEncryptEnvelop;
 
 pub fn format_envelop(envelop: &TinyEncryptEnvelop, config: &Option<TinyEncryptConfig>) -> String {
-    format_envelop_with_type_with(envelop, config, None)
-}
-
-pub fn format_envelop_with_type_with(envelop: &TinyEncryptEnvelop, config: &Option<TinyEncryptConfig>, type_width: Option<usize>) -> String {
     let config_envelop = config.as_ref().and_then(|c| c.find_by_kid(&envelop.kid));
     let envelop_kid = config_envelop.and_then(|e| e.sid.as_ref())
         .map(|sid| format!(", Sid: {}", sid))
@@ -14,7 +12,7 @@ pub fn format_envelop_with_type_with(envelop: &TinyEncryptEnvelop, config: &Opti
     let desc = envelop_desc.as_ref()
         .map(|desc| format!(", Desc: {}", desc))
         .unwrap_or_else(|| "".to_string());
-    format!("{}{}{}", with_with(&envelop.r#type.get_upper_name(), type_width), envelop_kid, desc)
+    format!("{}{}{}", with_with(&envelop.r#type.get_upper_name(), 10), envelop_kid, desc)
 }
 
 fn get_envelop_desc(envelop: &TinyEncryptEnvelop, config_envelop: &Option<&TinyEncryptConfigEnvelop>) -> Option<String> {
@@ -27,13 +25,6 @@ fn get_envelop_desc(envelop: &TinyEncryptEnvelop, config_envelop: &Option<&TinyE
     None
 }
 
-fn with_with(s: &str, width: Option<usize>) -> String {
-    match width {
-        None => s.to_string(),
-        Some(w) => if s.len() < w {
-            format!("{}{}", s, " ".repeat(w - s.len()))
-        } else {
-            s.to_string()
-        }
-    }
+fn with_with(s: &str, width: usize) -> String {
+    iff!(s.len() < width, format!("{}{}", s, " ".repeat(width - s.len())), s.to_string())
 }