diff --git a/cpp/include/cudf/types.hpp b/cpp/include/cudf/types.hpp
index b83f7adabab..addab160b6e 100644
--- a/cpp/include/cudf/types.hpp
+++ b/cpp/include/cudf/types.hpp
@@ -69,7 +69,7 @@ template <typename T> class duration_scalar_device_view;
 
 class table;
 class table_view;
-// class mutable_table_view;
+class mutable_table_view;
 
 /**
  * @addtogroup utility_types