diff --git a/src/rustc/middle/ty.rs b/src/rustc/middle/ty.rs
index f0013d3068e..6410cfe5b6a 100644
--- a/src/rustc/middle/ty.rs
+++ b/src/rustc/middle/ty.rs
@@ -204,6 +204,7 @@ type ctxt =
     @{diag: syntax::diagnostic::span_handler,
       interner: hashmap<intern_key, t_box>,
       mut next_id: uint,
+      cstore: metadata::cstore::cstore,
       sess: session::session,
       def_map: resolve::def_map,
       region_map: middle::region::region_map,
@@ -468,6 +469,7 @@ fn mk_ctxt(s: session::session, dm: resolve::def_map, amap: ast_map::map,
     @{diag: s.diagnostic(),
       interner: interner,
       mut next_id: 0u,
+      cstore: s.cstore,
       sess: s,
       def_map: dm,
       region_map: region_map,