diff --git a/power_grid_model_c/power_grid_model/include/power_grid_model/math_solver/short_circuit_solver.hpp b/power_grid_model_c/power_grid_model/include/power_grid_model/math_solver/short_circuit_solver.hpp
index 4c63da416..6aad146b6 100644
--- a/power_grid_model_c/power_grid_model/include/power_grid_model/math_solver/short_circuit_solver.hpp
+++ b/power_grid_model_c/power_grid_model/include/power_grid_model/math_solver/short_circuit_solver.hpp
@@ -62,7 +62,6 @@ template <symmetry_tag sym> class ShortCircuitSolver {
 
   private:
     Idx n_bus_;
-    Idx n_fault_;
     Idx n_source_;
     // shared topo data
     std::shared_ptr<DenseGroupedIdxVector const> sources_per_bus_;