diff --git a/src/librustc_privacy/lib.rs b/src/librustc_privacy/lib.rs
index 405952065da..5c3a016a82b 100644
--- a/src/librustc_privacy/lib.rs
+++ b/src/librustc_privacy/lib.rs
@@ -1015,7 +1015,7 @@ struct ObsoleteCheckTypeForPrivatenessVisitor<'a, 'b: 'a, 'tcx: 'b> {
 impl<'a, 'tcx> ObsoleteVisiblePrivateTypesVisitor<'a, 'tcx> {
     fn path_is_private_type(&self, path: &hir::Path) -> bool {
         let did = match path.def {
-            Def::PrimTy(..) | Def::SelfTy(..) => return false,
+            Def::PrimTy(..) | Def::SelfTy(..) | Def::Err => return false,
             def => def.def_id(),
         };