diff --git a/dune/solvers/test/common.hh b/dune/solvers/test/common.hh
index e057dcbc262f5c6c2e842cf147726a49d6c49f7f..e0c3208428cd7dd97da718e3580cb364a37c6477 100644
--- a/dune/solvers/test/common.hh
+++ b/dune/solvers/test/common.hh
@@ -236,8 +236,6 @@ void assemblePQ1RHS(const GridView& gridView, Vector& r, const Function& f)
     const IndexSet& indexSet = gridView.indexSet();
     FiniteElementCache cache;
 
-    int size = indexSet.size(dim);
-
     ElementIterator it = gridView.template begin<0>();
     ElementIterator end = gridView.template end<0>();
     for (; it != end; ++it)