diff --git a/lib/torque/renderer/iso.js b/lib/torque/renderer/iso.js
index 3fc0d30..07cce63 100644
--- a/lib/torque/renderer/iso.js
+++ b/lib/torque/renderer/iso.js
@@ -118,7 +118,7 @@ torque.extend(IsoRenderer.prototype, torque.Event, {
 
 	_getNext: function(currentPos, previousPos, cornerValues, contourValue){
 		var binaryCell = cornerValues.map(function(cornerValue){
-				if (cornerValue > contourValue){
+				if (cornerValue >= contourValue){
 					return "1";
 				}
 				return "0";