diff --git a/src/librustc/ty/maps/mod.rs b/src/librustc/ty/maps/mod.rs
index 58405c261ad..e14a77ea93b 100644
--- a/src/librustc/ty/maps/mod.rs
+++ b/src/librustc/ty/maps/mod.rs
@@ -121,6 +121,9 @@ define_maps! { <'tcx>
     /// (inferred) variance.
     [] fn variances_of: ItemVariances(DefId) -> Rc<Vec<ty::Variance>>,
 
+    /// Maps from def-id of a type to its (inferred) outlives.
+    [] fn inferred_outlives_of: PredicatesOfItem(DefId) -> ty::GenericPredicates<'tcx>,
+
     /// Maps from an impl/trait def-id to a list of the def-ids of its items
     [] fn associated_item_def_ids: AssociatedItemDefIds(DefId) -> Rc<Vec<DefId>>,