diff --git a/dune/fem-dg/examples/grids/nswaves_2d.dgf b/dune/fem-dg/examples/grids/nswaves_2d.dgf
index 02498525c8ec3da9f05891985a204eadcffb3500..db2629e43fc92a6fe48ae847e12ad02d308d8a68 100644
--- a/dune/fem-dg/examples/grids/nswaves_2d.dgf
+++ b/dune/fem-dg/examples/grids/nswaves_2d.dgf
@@ -2,7 +2,7 @@ DGF
 
 Interval
 0 0
-2 2
+1 1
 4 4
 #