diff --git a/chart.go b/chart.go
index c3aeeb9..1b2bd7f 100644
--- a/chart.go
+++ b/chart.go
@@ -479,7 +479,7 @@ func (c Chart) styleDefaultsSeries(seriesIndex int) Style {
 	strokeColor := GetDefaultColor(seriesIndex)
 	return Style{
 		StrokeColor: strokeColor,
-		StrokeWidth: DefaultStrokeWidth,
+		StrokeWidth: DefaultSeriesLineWidth,
 		Font:        c.GetFont(),
 		FontSize:    DefaultFontSize,
 	}
diff --git a/defaults.go b/defaults.go
index 6255d54..17e48cb 100644
--- a/defaults.go
+++ b/defaults.go
@@ -12,8 +12,10 @@ const (
 	DefaultChartHeight = 400
 	// DefaultChartWidth is the default chart width.
 	DefaultChartWidth = 1024
-	// DefaultStrokeWidth is the default chart line/stroke width.
-	DefaultStrokeWidth = 1.0
+	// DefaultStrokeWidth is the default chart stroke width.
+	DefaultStrokeWidth = 0.0
+	// DefaultSeriesLineWidth is the default line width.
+	DefaultSeriesLineWidth = 1.0
 	// DefaultAxisLineWidth is the line width of the axis lines.
 	DefaultAxisLineWidth = 1.0
 	//DefaultDPI is the default dots per inch for the chart.