diff --git a/src/libsyntax/visit.rs b/src/libsyntax/visit.rs
index 3535c6e267eba..749a92f04d827 100644
--- a/src/libsyntax/visit.rs
+++ b/src/libsyntax/visit.rs
@@ -665,8 +665,11 @@ pub fn walk_trait_item<'v, V: Visitor<'v>>(visitor: &mut V, trait_method: &'v Tr
         RequiredMethod(ref method_type) => visitor.visit_ty_method(method_type),
         ProvidedMethod(ref method) => walk_method_helper(visitor, &**method),
         TypeTraitItem(ref associated_type) => {
-            visitor.visit_ident(associated_type.ty_param.span,
-                                associated_type.ty_param.ident)
+            let typ = &associated_type.ty_param;
+            visitor.visit_ident(typ.span, typ.ident);
+            walk_ty_param_bounds_helper(visitor, &typ.bounds);
+            typ.default.as_ref().map(|t| visitor.visit_ty(&**t));
+            typ.unbound.as_ref().map(|t| visitor.visit_trait_ref(t));
         }
     }
 }
diff --git a/src/test/run-pass/associated-type-lifetime.rs b/src/test/run-pass/associated-type-lifetime.rs
new file mode 100644
index 0000000000000..1c68c94ce0f5e
--- /dev/null
+++ b/src/test/run-pass/associated-type-lifetime.rs
@@ -0,0 +1,17 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(associated_types)]
+
+trait Foo<'a> {
+    type I : Iterator<&'a int>;
+}
+
+fn main() { }