diff --git a/Tests/MathLib/TestLinearSolver.cpp b/Tests/MathLib/TestLinearSolver.cpp
index 7f3f9f6fc9047c0d22cd3500c5b6a77e06bf147e..9de70b1e7d3f5192930591fd47c26dec838f4bb8 100644
--- a/Tests/MathLib/TestLinearSolver.cpp
+++ b/Tests/MathLib/TestLinearSolver.cpp
@@ -204,8 +204,6 @@ void checkLinearSolverInterface(T_MATRIX& A, T_VECTOR& b,
 TEST(MathLib, CheckInterface_GaussAlgorithm)
 {
     boost::property_tree::ptree t_root;
-    boost::property_tree::ptree t_solver;
-    t_root.put_child("ogs", t_solver);
     BaseLib::ConfigTreeNew conf(t_root);
 
     using Example = Example1<std::size_t>;