diff --git a/src/apps/molresponse/FrequencyResponse.cpp b/src/apps/molresponse/FrequencyResponse.cpp
index ce2a0e5adfe..18c56662b40 100644
--- a/src/apps/molresponse/FrequencyResponse.cpp
+++ b/src/apps/molresponse/FrequencyResponse.cpp
@@ -280,7 +280,7 @@ auto FrequencyResponse::update_response(World &world, X_space &chi, XCOperator<d
 
     auto [new_res, bsh] = update_residual(world, chi, new_chi, r_params.calc_type(), old_residuals, xres_old);
     inner_to_json(world, "r_x", response_context.inner(new_res, new_res), iter_function_data);
-    if (iteration >= 0 && iteration < r_params.maxsub() + 2) {// & (iteration % 3 == 0)) {
+    if (iteration >= 0 && iteration < r_params.maxsub()) {// & (iteration % 3 == 0)) {
         new_chi = kain_x_space_update(world, chi, new_res, kain_x_space);
     }
     inner_to_json(world, "x_update", response_context.inner(new_chi, new_chi), iter_function_data);
diff --git a/src/apps/molresponse/testing/runners.hpp b/src/apps/molresponse/testing/runners.hpp
index 0e98c1f92b0..0ff9d8ab30c 100644
--- a/src/apps/molresponse/testing/runners.hpp
+++ b/src/apps/molresponse/testing/runners.hpp
@@ -555,7 +555,7 @@ void set_frequency_response_parameters(World &world, ResponseParameters &r_param
         }
         //r_params.set_user_defined_value("archive", std::string("../restartdata"));
         r_params.set_user_defined_value("maxiter", size_t(35));
-        r_params.set_user_defined_value("maxsub", size_t(10));
+        r_params.set_user_defined_value("maxsub", size_t(5));
         r_params.set_user_defined_value("kain", true);
         r_params.set_user_defined_value("omega", frequency);
         r_params.set_user_defined_value("first_order", true);