diff --git a/dune/tectonic/myblockproblem.hh b/dune/tectonic/myblockproblem.hh
index d572dd6584b85cd56bcb77c0e75667a543ecfe11..c9eeb15b089b4367818111887dca171ebd81f3c1 100644
--- a/dune/tectonic/myblockproblem.hh
+++ b/dune/tectonic/myblockproblem.hh
@@ -150,7 +150,7 @@ template <class MyConvexProblemTypeTEMPLATE> class MyBlockProblem {
     linearization.truncation.resize(u.size());
     linearization.truncation.unsetAll();
     for (size_t i = 0; i < u.size(); ++i) {
-      if (problem.phi.regularity(i, u[i]) > 1e8) {
+      if (problem.phi.regularity(i, u[i]) > 1e8) { // TODO: Make customisable
         linearization.truncation[i] = true;
         continue;
       }