diff --git a/src/one-body-sample.cc b/src/one-body-sample.cc
index 94a97492a4eb8c9353e59fdc71da5504299a59bf..88e39e12d0d3f53fc1931c28f70618dff48ded18 100644
--- a/src/one-body-sample.cc
+++ b/src/one-body-sample.cc
@@ -81,7 +81,7 @@ int main() {
     // Fill initial guess with other semi-random numbers
     for (size_t i = 0; i < f.size(); ++i)
       for (size_t j = 0; j < dim; ++j)
-        f[i][j] = i * j;
+        u[i][j] = 17 * j;
 
     Dune::BitSetVector<VectorType::block_type::dimension> ignoreNodes(
         grid.size(grid.maxLevel(), dim), false);