diff --git a/dune/fem-dg/algorithm/caller/sub/datawriter.hh b/dune/fem-dg/algorithm/caller/sub/datawriter.hh
index 4cb0674d70772e1a59de6b23fd38f9315b4ea523..dcd4705cf0ac68299e6f4a4a9779710971e7cf09 100644
--- a/dune/fem-dg/algorithm/caller/sub/datawriter.hh
+++ b/dune/fem-dg/algorithm/caller/sub/datawriter.hh
@@ -80,7 +80,9 @@ namespace Fem
 
             consLF.evaluate( x, cons );
 
-            alg->paraview( t, xgl, cons, prim );
+            //neglegt zero values
+            if( cons[0] > 1e-15 )
+              alg->paraview( t, xgl, cons, prim );
 
             return prim;
           });