diff --git a/chart/base.js b/chart/base.js
index 82030fd..f920962 100644
--- a/chart/base.js
+++ b/chart/base.js
@@ -267,7 +267,8 @@ var Chart = Backbone.Model.extend ({
 								})
 							}
 						}
-					}
+					},
+					"c:smooth": me.noSmoothLines ? 0 : undefined //disable line smoothing in chart
 				};
 				if (chart == "scatter") {
 					r ["c:xVal"] = r ["c:cat"];