1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax_ext/deriving/generic/mod.rs b/src/libsyntax_ext/deriving/generic/mod.rs
index 6b739e27eee..55fb7677038 100644
--- a/src/libsyntax_ext/deriving/generic/mod.rs
+++ b/src/libsyntax_ext/deriving/generic/mod.rs
@@ -425,7 +425,7 @@ impl<'a> TraitDef<'a> {
                         return;
                     }
                 };
-                let container_id = cx.current_expansion.id.expn_info().parent;
+                let container_id = cx.current_expansion.id.expn_data().parent;
                 let is_always_copy =
                     cx.resolver.has_derives(container_id, SpecialDerives::COPY) &&
                     has_no_type_params;