Index: /issm/trunk-jpl/src/m/classes/mask.py
===================================================================
--- /issm/trunk-jpl/src/m/classes/mask.py	(revision 17282)
+++ /issm/trunk-jpl/src/m/classes/mask.py	(revision 17283)
@@ -46,5 +46,5 @@
 
 		# get mask of vertices of elements with ice
-		isice=numpy.array(md.mask.ice_levelset<=0.,int)
+		isice=numpy.array(md.mask.ice_levelset<0.,int)
 		vlist = numpy.zeros((md.mesh.numberofvertices,1), dtype=int)
 		pos=numpy.nonzero(numpy.sum(isice[md.mesh.elements-1],axis=1))[0]