diff --git a/ci/vfc_ci_report/compare_runs.py b/ci/vfc_ci_report/compare_runs.py
index bc8da4e..d05b676 100644
--- a/ci/vfc_ci_report/compare_runs.py
+++ b/ci/vfc_ci_report/compare_runs.py
@@ -235,8 +235,8 @@ class CompareRuns:
 
     def update_n_runs(self, attrname, old, new):
         # Simply update runs selection (value and string display)
-        self.select_n_runs.value = new
-        self.current_n_runs = self.n_runs_dict[self.select_n_runs.value]
+        self.widgets["select_n_runs"].value = new
+        self.current_n_runs = self.n_runs_dict[self.widgets["select_n_runs"].value]
 
         self.update_plots()
 
diff --git a/include/SM_Helpers.hpp b/include/SM_Helpers.hpp
index 3543936..b569d18 100644
--- a/include/SM_Helpers.hpp
+++ b/include/SM_Helpers.hpp
@@ -87,7 +87,7 @@ T1 *outProd(T1 *vec1, T2 *vec2, unsigned int M) {
   }
   return C;
 }
- 
+
 // // This flat version doesn't work. Get's stuck in an infinite recursion loop.
 // template <typename T> T determinant(T *A, unsigned int M) {
 //   std::cout << "determinant() called..." << std::endl;
@@ -232,3 +232,15 @@ template <typename T> T residual_frobenius2(T *A, unsigned int Dim) {
   }
   return res;
 }
+
+
+template <typename T> T residual2(T * A, unsigned int Dim) {
+  double res = 0.0;
+  for (unsigned int i = 0; i < Dim; i++) {
+    for (unsigned int j = 0; j < Dim; j++) {
+      T delta = (A[i * Dim + j] - (i == j));
+      res += delta*delta;
+    }
+  }
+  return res;
+}
diff --git a/tests/vfc_test_h5.cpp b/tests/vfc_test_h5.cpp
index 91109cf..920e069 100644
--- a/tests/vfc_test_h5.cpp
+++ b/tests/vfc_test_h5.cpp
@@ -133,15 +133,15 @@ int test_cycle(H5File file, int cycle, std::string version,
   matMul(slater_matrix, slater_inverse, res, dim);
   bool ok = is_identity(res, dim, 1e-3);
 
-  double res_max = residual_max(res, dim);
-  double res2 = residual_frobenius2(res, dim);
+  double res2 = residual2(res, dim);
+  double frob2 = norm_frobenius2(res, dim);
 
 #ifdef DEBUG
   showMatrix(res, dim, "Result");
 #endif
 
-  vfc_put_probe(probes, &(zero_padded_group)[0], &("res_max_" + version)[0],
-                res_max);
+  vfc_put_probe(probes, &(zero_padded_group)[0], &("frob2_" + version)[0],
+                frob2);
   vfc_put_probe(probes, &(zero_padded_group)[0], &("res2_" + version)[0], res2);
 
   delete[] res, updates, u, col_update_index, slater_matrix, slater_inverse;