diff --git a/src/Orchard.Web/Modules/Markdown/Services/MarkdownFilter.cs b/src/Orchard.Web/Modules/Markdown/Services/MarkdownFilter.cs
index 40cc9cb98..150a14693 100644
--- a/src/Orchard.Web/Modules/Markdown/Services/MarkdownFilter.cs
+++ b/src/Orchard.Web/Modules/Markdown/Services/MarkdownFilter.cs
@@ -4,7 +4,7 @@ using Orchard.Services;
 namespace Markdown.Services {
     public class MarkdownFilter : IHtmlFilter {
         public string ProcessContent(string text, string flavor) {
-            return flavor.Equals("markdown", StringComparison.OrdinalIgnoreCase) ? MarkdownReplace(text) : text;
+            return String.Equals(flavor, "markdown", StringComparison.OrdinalIgnoreCase) ? MarkdownReplace(text) : text;
         }
 
         private static string MarkdownReplace(string text) {