c_int over usize, whoops
diff --git a/src/redox/mod.rs b/src/redox/mod.rs
index 9c8ab2d..fb3c3f6 100644
--- a/src/redox/mod.rs
+++ b/src/redox/mod.rs
@@ -85,37 +85,37 @@
pub const O_NOFOLLOW: ::c_int = 0x8000_0000;
pub const O_ACCMODE: ::c_int = O_RDONLY | O_WRONLY | O_RDWR;
-pub const SIGHUP: usize = 1;
-pub const SIGINT: usize = 2;
-pub const SIGQUIT: usize = 3;
-pub const SIGILL: usize = 4;
-pub const SIGTRAP: usize = 5;
-pub const SIGABRT: usize = 6;
-pub const SIGBUS: usize = 7;
-pub const SIGFPE: usize = 8;
-pub const SIGKILL: usize = 9;
-pub const SIGUSR1: usize = 10;
-pub const SIGSEGV: usize = 11;
-pub const SIGUSR2: usize = 12;
-pub const SIGPIPE: usize = 13;
-pub const SIGALRM: usize = 14;
-pub const SIGTERM: usize = 15;
-pub const SIGSTKFLT: usize = 16;
-pub const SIGCHLD: usize = 17;
-pub const SIGCONT: usize = 18;
-pub const SIGSTOP: usize = 19;
-pub const SIGTSTP: usize = 20;
-pub const SIGTTIN: usize = 21;
-pub const SIGTTOU: usize = 22;
-pub const SIGURG: usize = 23;
-pub const SIGXCPU: usize = 24;
-pub const SIGXFSZ: usize = 25;
-pub const SIGVTALRM: usize = 26;
-pub const SIGPROF: usize = 27;
-pub const SIGWINCH: usize = 28;
-pub const SIGIO: usize = 29;
-pub const SIGPWR: usize = 30;
-pub const SIGSYS: usize = 31;
+pub const SIGHUP: ::c_int = 1;
+pub const SIGINT: ::c_int = 2;
+pub const SIGQUIT: ::c_int = 3;
+pub const SIGILL: ::c_int = 4;
+pub const SIGTRAP: ::c_int = 5;
+pub const SIGABRT: ::c_int = 6;
+pub const SIGBUS: ::c_int = 7;
+pub const SIGFPE: ::c_int = 8;
+pub const SIGKILL: ::c_int = 9;
+pub const SIGUSR1: ::c_int = 10;
+pub const SIGSEGV: ::c_int = 11;
+pub const SIGUSR2: ::c_int = 12;
+pub const SIGPIPE: ::c_int = 13;
+pub const SIGALRM: ::c_int = 14;
+pub const SIGTERM: ::c_int = 15;
+pub const SIGSTKFLT: ::c_int = 16;
+pub const SIGCHLD: ::c_int = 17;
+pub const SIGCONT: ::c_int = 18;
+pub const SIGSTOP: ::c_int = 19;
+pub const SIGTSTP: ::c_int = 20;
+pub const SIGTTIN: ::c_int = 21;
+pub const SIGTTOU: ::c_int = 22;
+pub const SIGURG: ::c_int = 23;
+pub const SIGXCPU: ::c_int = 24;
+pub const SIGXFSZ: ::c_int = 25;
+pub const SIGVTALRM: ::c_int = 26;
+pub const SIGPROF: ::c_int = 27;
+pub const SIGWINCH: ::c_int = 28;
+pub const SIGIO: ::c_int = 29;
+pub const SIGPWR: ::c_int = 30;
+pub const SIGSYS: ::c_int = 31;
extern {
pub fn memalign(align: ::size_t, size: ::size_t) -> *mut ::c_void;