diff --git a/gcc/rust/ast/rust-ast-collector.cc b/gcc/rust/ast/rust-ast-collector.cc
index 804519835ce..84a6161cd7e 100644
--- a/gcc/rust/ast/rust-ast-collector.cc
+++ b/gcc/rust/ast/rust-ast-collector.cc
@@ -2371,6 +2371,7 @@ TokenCollector::visit (TraitImpl &impl)
       visit (impl.get_where_clause ());
   });
   visit_items_as_block (impl.get_impl_items ());
+  end_internal_comment ("TraitImpl");
 }
 
 void