diff --git a/src/one-body-sample.cc b/src/one-body-sample.cc
index 60561cc3929ae6b1a26181f5b421f7be413abc6c..7460c74de63df598e65674f1e295625e8feea73c 100644
--- a/src/one-body-sample.cc
+++ b/src/one-body-sample.cc
@@ -190,8 +190,8 @@ int main() {
     VectorType u2 = u1;
     CellVectorType vonMisesStress;
 
-    VectorType b1(grid.size(grid.maxLevel(), dim));
-    VectorType b2(grid.size(grid.maxLevel(), dim));
+    VectorType b1;
+    VectorType b2;
 
     std::vector<Dune::FieldVector<double, 1>> nodalIntegrals;
     assemble_frictional<GridType, GridType::LeafGridView, SmallVector, P1Basis>(