diff --git a/docs/Rules/MA0028.md b/docs/Rules/MA0028.md
index 30d2c41d9..9ddb60c9a 100644
--- a/docs/Rules/MA0028.md
+++ b/docs/Rules/MA0028.md
@@ -25,10 +25,3 @@ new StringBuilder().Append(10.ToString());
 new StringBuilder().Append(10);
 ```
 
-
-```csharp
-new StringBuilder().Append(10.ToString("n1", CultureInfo.CurrentCulture));
-
-// Should be
-new StringBuilder().AppendFormat(CultureInfo.CurrentCulture, "{0:n1}", 10);
-```