diff --git a/src/TNL/Solvers/IterativeSolverMonitor.h b/src/TNL/Solvers/IterativeSolverMonitor.h
index 401e34c23a6183075dff5dd64c039ba066ac4bd5..651f38cdedc7b061077e96dc22750e3f867413ae 100644
--- a/src/TNL/Solvers/IterativeSolverMonitor.h
+++ b/src/TNL/Solvers/IterativeSolverMonitor.h
@@ -115,6 +115,7 @@ class IterativeSolverMonitor : public SolverMonitor
 
       IndexType iterations, saved_iterations, iterations_before_refresh;
 
+      // TODO: move verbose to SolverMonitor
       IndexType verbose;
 
       IndexType nodesPerIteration;