diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index bf0c3ae987a2d..fabb3900ec648 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -103,17 +103,17 @@ mod int_macros;
 #[macro_use]
 mod uint_macros;
 
-#[path = "num/isize.rs"]  pub mod isize;
-#[path = "num/i8.rs"]   pub mod i8;
-#[path = "num/i16.rs"]  pub mod i16;
-#[path = "num/i32.rs"]  pub mod i32;
-#[path = "num/i64.rs"]  pub mod i64;
+#[path = "num/isize.rs"] pub mod isize;
+#[path = "num/i8.rs"]    pub mod i8;
+#[path = "num/i16.rs"]   pub mod i16;
+#[path = "num/i32.rs"]   pub mod i32;
+#[path = "num/i64.rs"]   pub mod i64;
 
 #[path = "num/usize.rs"] pub mod usize;
-#[path = "num/u8.rs"]   pub mod u8;
-#[path = "num/u16.rs"]  pub mod u16;
-#[path = "num/u32.rs"]  pub mod u32;
-#[path = "num/u64.rs"]  pub mod u64;
+#[path = "num/u8.rs"]    pub mod u8;
+#[path = "num/u16.rs"]   pub mod u16;
+#[path = "num/u32.rs"]   pub mod u32;
+#[path = "num/u64.rs"]   pub mod u64;
 
 #[path = "num/f32.rs"]   pub mod f32;
 #[path = "num/f64.rs"]   pub mod f64;