diff --git a/dune/gdt/operators/localizable-operator.hh b/dune/gdt/operators/localizable-operator.hh
index 7f141f68250e1b30ad88f70d65750633c11c93d8..d6f2a8b707ee9aff6d4d2ce75f8f60f1f915c50f 100644
--- a/dune/gdt/operators/localizable-operator.hh
+++ b/dune/gdt/operators/localizable-operator.hh
@@ -24,6 +24,10 @@ namespace Dune {
 namespace GDT {
 
 
+/**
+ * \todo Rename this one to LocalizableDiscreteOperatorBase, create LocalizableOperatorBase which accepts a GridFunction
+ *       as source, derive LocalizableDiscreteOperatorBase from LocalizableOperatorBase.
+ */
 template <class AssemblyGridView,
           class SourceVector,
           size_t source_range_dim = 1,