diff --git a/src/utility.rs b/src/utility.rs
index 0d6443b..e35f850 100644
--- a/src/utility.rs
+++ b/src/utility.rs
@@ -6,8 +6,8 @@ use std::fmt::Display;
 macro_rules! concat_os_str {(
   $base: expr, $($suffix: expr),+
 ) => {{
-  let mut base = std :: ffi :: OsString :: from ( $ base ) ;
-  $ ( base . push ( $ suffix ) ; ) +
+  let mut base = std::ffi::OsString::from($base);
+  $(base.push($suffix);)+
   base
 }}}