diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index 2121bc4438056..32cf31231c301 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -147,14 +147,14 @@ mod uint_macros;
 #[path = "num/i16.rs"]   pub mod i16;
 #[path = "num/i32.rs"]   pub mod i32;
 #[path = "num/i64.rs"]   pub mod i64;
-#[path = "num/i128.rs"]   pub mod i128;
+#[path = "num/i128.rs"]  pub mod i128;
 
 #[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/u128.rs"]   pub mod u128;
+#[path = "num/u128.rs"]  pub mod u128;
 
 #[path = "num/f32.rs"]   pub mod f32;
 #[path = "num/f64.rs"]   pub mod f64;