diff --git a/src/libstd/bigint.rs b/src/libstd/num/bigint.rs
similarity index 100%
rename from src/libstd/bigint.rs
rename to src/libstd/num/bigint.rs
diff --git a/src/libstd/std.rc b/src/libstd/std.rc
index 74ef229a033..30346d1b16b 100644
--- a/src/libstd/std.rc
+++ b/src/libstd/std.rc
@@ -95,6 +95,7 @@ pub mod cmp;
 pub mod base64;
 pub mod rl;
 pub mod workcache;
+#[path="num/bigint.rs"]
 pub mod bigint;
 pub mod stats;
 pub mod semver;