diff --git a/src/chown/Cargo.toml b/src/chown/Cargo.toml
index 1da09f5f0..e34abc72f 100644
--- a/src/chown/Cargo.toml
+++ b/src/chown/Cargo.toml
@@ -12,7 +12,7 @@ getopts = "*"
 glob = "*"
 libc = "*"
 uucore = { path="../uucore" }
-clippy = {version = "*", optional = true}
+walkdir = "0.1"
 
 [[bin]]
 name = "chown"
diff --git a/src/chown/passwd.rs b/src/chown/passwd.rs
index 3b5e7f744..ff0707228 100644
--- a/src/chown/passwd.rs
+++ b/src/chown/passwd.rs
@@ -18,6 +18,7 @@ macro_rules! gen_func {
                 if !data.is_null() {
                     return Ok(id);
                 } else {
+                    // last_os_error() returns success
                     return Err(Error::new(ErrorKind::NotFound, format!("No such id `{}`", id)));
                 }
             } else {
@@ -30,6 +31,7 @@ macro_rules! gen_func {
                         ptr::read(data).$field
                     });
                 } else {
+                    // last_os_error() returns success
                     return Err(Error::new(ErrorKind::NotFound, format!("No such name `{}`", name_or_id)));
                 }
             }