diff --git a/utils/glcanvas/samples/isosurf/isosurf.dat.gz b/utils/glcanvas/samples/isosurf/isosurf.dat.gz
index b2b9e007d7..c07dc570d2 100644
Binary files a/utils/glcanvas/samples/isosurf/isosurf.dat.gz and b/utils/glcanvas/samples/isosurf/isosurf.dat.gz differ