diff --git a/dune/tectonic/myblockproblem.hh b/dune/tectonic/myblockproblem.hh
index 435d4f2ad6ee8672ddfb1532322ac271c033db53..50fbf2e7864b97cec97ee0d1562e7f12cf623ef2 100644
--- a/dune/tectonic/myblockproblem.hh
+++ b/dune/tectonic/myblockproblem.hh
@@ -22,7 +22,7 @@
 /** \brief Base class for problems where each block can be solved with a
  * modified gradient method */
 template <class ConvexProblem>
-class MyBlockProblem : /* NOT PUBLIC */ BlockNonlinearGSProblem<ConvexProblem> {
+class MyBlockProblem : /* not public */ BlockNonlinearGSProblem<ConvexProblem> {
 private:
   typedef BlockNonlinearGSProblem<ConvexProblem> Base;
 
@@ -107,8 +107,7 @@ class MyBlockProblem : /* NOT PUBLIC */ BlockNonlinearGSProblem<ConvexProblem> {
     auto const psi = restrict(problem_.A, problem_.f, u, v, problem_.phi);
     Dune::Solvers::Interval<double> D;
     psi.subDiff(0, D);
-    // NOTE: Numerical instability can actually get us here
-    if (D[1] > 0)
+    if (D[1] > 0) // NOTE: Numerical instability can actually get us here
       return 0;
 
     int bisectionsteps = 0;
@@ -175,17 +174,15 @@ class MyBlockProblem : /* NOT PUBLIC */ BlockNonlinearGSProblem<ConvexProblem> {
           auto const blockEnd = std::end((*col_it)[i]);
           for (auto blockIt = std::begin((*col_it)[i]); blockIt != blockEnd;
                ++blockIt)
-            if (linearization.truncation[row][i] ||
+            if (linearization.truncation[row][i] or
                 linearization.truncation[col][blockIt.index()])
               *blockIt = 0.0;
         }
       }
-
       for (size_t j = 0; j < block_size; ++j)
         if (linearization.truncation[row][j])
           linearization.b[row][j] = 0.0;
     }
-
     for (size_t j = 0; j < block_size; ++j)
       outStream << std::setw(9) << linearization.truncation.countmasked(j);
   }
@@ -266,13 +263,9 @@ class MyBlockProblem<ConvexProblem>::IterateObject {
   }
 
 private:
-  // problem data
   ConvexProblem const &problem;
-
   std::vector<double> maxEigenvalues_;
-
   Bisection const bisection_;
-
   // state data for smoothing procedure used by:
   // setIterate, updateIterate, solveLocalProblem
   VectorType u;