diff --git a/dune/fem-dg/examples/grids/nswaves_3d.dgf b/dune/fem-dg/examples/grids/nswaves_3d.dgf
index 94d3c0c48526f1ee43265dc504d261c50b38d6a2..b8b977f030693ead3ee28d3f14695fe831488d05 100644
--- a/dune/fem-dg/examples/grids/nswaves_3d.dgf
+++ b/dune/fem-dg/examples/grids/nswaves_3d.dgf
@@ -3,7 +3,7 @@ DGF
 Interval
 0 0 0
 1 1 1
-8 8 8
+4 4 4
 #
 
 GridParameter