diff --git a/dune/tectonic/myblockproblem.hh b/dune/tectonic/myblockproblem.hh
index a8d2818d0b78afda771774d77c9229853c78d150..e5e7508830094484fb4f78fa43712f89f61fe901 100644
--- a/dune/tectonic/myblockproblem.hh
+++ b/dune/tectonic/myblockproblem.hh
@@ -118,10 +118,16 @@ template <class MyConvexProblemTypeTEMPLATE> class MyBlockProblem {
     // determine truncation pattern
     linearization.truncation.resize(u.size());
     linearization.truncation.unsetAll();
-    for (size_t i = 0; i < u.size(); ++i)
-      // TODO: should ignoreNodes be truncated as well?
-      if (problem.phi.regularity(i, u[i]) > 1e8) // TODO
+    for (size_t i = 0; i < u.size(); ++i) {
+      if (problem.phi.regularity(i, u[i]) > 1e8) {
         linearization.truncation[i] = true;
+        continue;
+      }
+
+      for (int j = 0; j < block_size; ++j)
+        if (linearization.ignore[i][j])
+          linearization.truncation[i][j] = true;
+    }
 
     // construct sparsity pattern for linearization
     Dune::MatrixIndexSet indices(problem.A.N(), problem.A.M());