diff --git a/NumLib/ODESolver/NonlinearSolver.cpp b/NumLib/ODESolver/NonlinearSolver.cpp
index 990d00a8ce1f5338dffa0f719ab6daa7ed3cec8b..4456263c744e8dfd16719a7d77550d77b3bde0a4 100644
--- a/NumLib/ODESolver/NonlinearSolver.cpp
+++ b/NumLib/ODESolver/NonlinearSolver.cpp
@@ -319,6 +319,7 @@ createNonlinearSolver(GlobalLinearSolver& linear_solver,
     //! \ogs_file_param{prj__nonlinear_solvers__nonlinear_solver__max_iter}
     auto const max_iter = config.getConfigParameter<unsigned>("max_iter");
 
+    //! \ogs_file_param_special{prj__nonlinear_solvers__nonlinear_solver__Picard}
     if (type == "Picard") {
         auto const tag = NonlinearSolverTag::Picard;
         using ConcreteNLS = NonlinearSolver<tag>;