diff --git a/tutorial/t9.geo b/tutorial/t9.geo
index 18c69cc90d969579c7a00b373113a9cac88a5c47..b038d3b9d50f80203ff0a2612a58e5bc405720e4 100644
--- a/tutorial/t9.geo
+++ b/tutorial/t9.geo
@@ -38,7 +38,7 @@ Plugin(CutPlane).C = 1 ;
 Plugin(CutPlane).D = 0 ; 
 Plugin(CutPlane).Run ; 
 
-View[0].Light = 0;
+View[0].Light = 1;
 View[0].IntervalsType = 2;
 View[0].NbIso = 6;
 View[0].SmoothNormals = 1;