diff --git a/dune/tectonic/myblockproblem.hh b/dune/tectonic/myblockproblem.hh
index 2005947f1fd6af2d53e3d8a1a4f2e3d9247a4c0a..51a7c5f1a4003c99a4d2cb470b347a232c20b19d 100644
--- a/dune/tectonic/myblockproblem.hh
+++ b/dune/tectonic/myblockproblem.hh
@@ -251,7 +251,7 @@ class MyBlockProblem<MyConvexProblemTypeTEMPLATE>::IterateObject {
    */
   void solveLocalProblem(
       LocalVectorType &ui, int m,
-      const typename Dune::BitSetVector<block_size>::const_reference ignore) {
+      typename Dune::BitSetVector<block_size>::const_reference ignore) {
     {
       int ignore_component =
           block_size; // Special value that indicates nothing should be ignored