diff --git a/js/docx/smoke/api_rgb_color/to_json.js b/js/docx/smoke/api_rgb_color/to_json.js
index 4daaa403..84095a9c 100644
--- a/js/docx/smoke/api_rgb_color/to_json.js
+++ b/js/docx/smoke/api_rgb_color/to_json.js
@@ -18,7 +18,7 @@ builder.CreateFile("docx");
         oDocument.Push(oParagraph1);
     let oParagraph2 = Api.CreateParagraph();
     let oGs1 = Api.CreateGradientStop(oRGBColor, 0);
-    let oGs2 = Api.CreateGradientStop(oRGBColor, 10);
+    let oGs2 = Api.CreateGradientStop(255, 213, 191, 100000);
     let oFill = Api.CreateLinearGradientFill([oGs1, oGs2], 5400000);
     let oStroke = Api.CreateStroke(0, Api.CreateNoFill());
     let oDrawing = Api.CreateShape("rect", 5930900, 395605, oFill, oStroke);
diff --git a/spec/docx/smoke/api_rgb_color_spec.rb b/spec/docx/smoke/api_rgb_color_spec.rb
index 093ebb78..15af123e 100644
--- a/spec/docx/smoke/api_rgb_color_spec.rb
+++ b/spec/docx/smoke/api_rgb_color_spec.rb
@@ -9,10 +9,10 @@
 
   it 'ApiRGBColor | ToJSON method' do
     docx = builder.build_and_parse('js/docx/smoke/api_rgb_color/to_json.js')
-    rgba = JSON.parse(docx.elements[1].nonempty_runs.first.text)
-    lst = rgba['graphic']['spPr']['fill']['fill']['gsLst'][1]['color']['color']['rgba']
-    expect(lst['red']).to eq(255)
-    expect(lst['green']).to eq(111)
-    expect(lst['blue']).to eq(61)
+    json = JSON.parse(docx.elements[1].nonempty_runs.first.text)
+    rgba = json['graphic']['spPr']['fill']['fill']['gsLst'][0]['color']['color']['rgba']
+    expect(rgba['red']).to eq(255)
+    expect(rgba['green']).to eq(111)
+    expect(rgba['blue']).to eq(61)
   end
 end