diff --git a/lib/sparkline.ex b/lib/sparkline.ex
index f45a6a3..9c8d817 100644
--- a/lib/sparkline.ex
+++ b/lib/sparkline.ex
@@ -100,6 +100,7 @@ defmodule Sparkline do
           {:width, number()}
           | {:height, number()}
           | {:padding, number()}
+          | {:smoothing, float()}
           | {:placeholder, nil | String.t()}
 
   @typedoc "A general sparkline options list."
@@ -112,7 +113,7 @@ defmodule Sparkline do
   @type dots_options :: list(option())
 
   @typedoc "A line-related sparkline option."
-  @type line_option :: {:width, number()} | {:color, String.t()} | {:smoothing, float()}
+  @type line_option :: {:width, number()} | {:color, String.t()}
 
   @typedoc "A line-related sparkline options list."
   @type line_options :: list(option())
@@ -128,6 +129,7 @@ defmodule Sparkline do
           width: number(),
           height: number(),
           padding: number(),
+          smoothing: float(),
           placeholder: nil | String.t(),
           dots: nil | map(),
           line: nil | map(),
@@ -152,7 +154,7 @@ defmodule Sparkline do
   @spec new(datapoints(), options()) :: Sparkline.t()
   def new(datapoints, options \\ []) do
     options =
-      [width: 200, height: 100, padding: 6, placeholder: nil]
+      [width: 200, height: 100, padding: 6, smoothing: 0.2, placeholder: nil]
       |> Keyword.merge(options)
       |> Map.new()
       |> Map.merge(%{dots: nil, line: nil, area: nil})
@@ -181,7 +183,7 @@ defmodule Sparkline do
   @spec show_line(Sparkline.t(), line_options()) :: Sparkline.t()
   def show_line(sparkline, options \\ []) do
     line_options =
-      [width: 0.25, color: "black", smoothing: 0.2]
+      [width: 0.25, color: "black"]
       |> Keyword.merge(options)
       |> Map.new()
 
diff --git a/lib/sparkline/draw.ex b/lib/sparkline/draw.ex
index 6879550..20d2bc8 100644
--- a/lib/sparkline/draw.ex
+++ b/lib/sparkline/draw.ex
@@ -142,10 +142,9 @@ defmodule Sparkline.Draw do
         ) :: {number(), number()}
   defp calculate_control_point(curr, prev, next, direction, options) do
     {length, angle} = calculate_line(prev, next)
-    smoothing = if options.line, do: options.line.smoothing, else: 0
 
     angle = if direction == :right, do: angle + :math.pi(), else: angle
-    length = length * smoothing
+    length = length * options.smoothing
 
     {
       curr.x + :math.cos(angle) * length,
diff --git a/test/sparkline_test.exs b/test/sparkline_test.exs
index 07e01ab..18b3f07 100644
--- a/test/sparkline_test.exs
+++ b/test/sparkline_test.exs
@@ -150,11 +150,11 @@ defmodule SparklineTest do
 
   test "to_svg/2 with non-default options (for line)" do
     assert Sparkline.new([{1, 1}, {2, 2}])
-           |> Sparkline.show_line(width: 1, color: "red", smoothing: 0)
+           |> Sparkline.show_line(width: 1, color: "red")
            |> Sparkline.to_svg() ==
              {:ok,
               """
-              <svg width="100%" height="100%"\n  viewBox="0 0 200 100"\n  xmlns="http://www.w3.org/2000/svg">\n  \n  <path\n  d="M6.0,94.0C6.0,94.0 194.0,6.0 194.0,6.0"\n  fill="none"\n  stroke="red"\n  stroke-width="1" />\n\n  \n</svg>
+              <svg width="100%" height="100%"\n  viewBox="0 0 200 100"\n  xmlns="http://www.w3.org/2000/svg">\n  \n  <path\n  d="M6.0,94.0C43.6,76.4 156.4,23.6 194.0,6.0"\n  fill="none"\n  stroke="red"\n  stroke-width="1" />\n\n  \n</svg>
               """}
   end
 
@@ -164,14 +164,14 @@ defmodule SparklineTest do
            |> Sparkline.to_svg() ==
              {:ok,
               """
-              <svg width="100%" height="100%"\n  viewBox="0 0 200 100"\n  xmlns="http://www.w3.org/2000/svg">\n  <path\n  d="M6.0,94.0C6.0,94.0 194.0,6.0 194.0,6.0V100H6.0Z"\n  fill="red"\n  stroke="none" />\n\n  \n  \n</svg>
+              <svg width="100%" height="100%"\n  viewBox="0 0 200 100"\n  xmlns="http://www.w3.org/2000/svg">\n  <path\n  d="M6.0,94.0C43.6,76.4 156.4,23.6 194.0,6.0V100H6.0Z"\n  fill="red"\n  stroke="none" />\n\n  \n  \n</svg>
               """}
   end
 
   test "to_svg/2 with non-default options (all)" do
-    assert Sparkline.new([{1, 1}, {2, 2}], width: 10, height: 10, padding: 1)
+    assert Sparkline.new([{1, 1}, {2, 2}], width: 10, height: 10, padding: 1, smoothing: 0)
            |> Sparkline.show_dots(radius: 2, color: "red")
-           |> Sparkline.show_line(width: 1, color: "red", smoothing: 0)
+           |> Sparkline.show_line(width: 1, color: "red")
            |> Sparkline.show_area(color: "red")
            |> Sparkline.to_svg() ==
              {:ok,