diff --git a/Cargo.toml b/Cargo.toml
index f0a9817d14..0878415de8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,7 +58,6 @@ orbclient = "0.3.47"
 plain = "0.2.3"
 redox-daemon = "0.1.3"
 redox_liner = "0.5.2"
-libc = "0.2.171"
 libredox = "0.1.3"
 redox_termios = "0.1.3"
 redox_event = "0.4"
diff --git a/src/bin/passwd.rs b/src/bin/passwd.rs
index b2102e7929..cacb4d09bf 100644
--- a/src/bin/passwd.rs
+++ b/src/bin/passwd.rs
@@ -6,7 +6,8 @@ use std::io::Write;
 use std::process::exit;
 
 use extra::option::OptionalExt;
-use libc::{EPERM, O_CLOEXEC};
+use libredox::flag::O_CLOEXEC;
+use libredox::errno::EPERM;
 use redox_users::{All, AllUsers, Config, get_uid};
 use termion::input::TermRead;
 
diff --git a/src/bin/su.rs b/src/bin/su.rs
index cbf939e12d..49c3496706 100644
--- a/src/bin/su.rs
+++ b/src/bin/su.rs
@@ -6,7 +6,7 @@ use std::process::exit;
 use std::str;
 
 use extra::option::OptionalExt;
-use libc::O_CLOEXEC;
+use libredox::flag::O_CLOEXEC;
 use redox_users::{All, AllUsers, Config, get_uid};
 use syscall::EPERM;
 use termion::input::TermRead;