diff --git a/EmbeddedPropEditorExample/EmbeddedController.cs b/EmbeddedPropEditorExample/EmbeddedController.cs
index 099f773..6a52763 100644
--- a/EmbeddedPropEditorExample/EmbeddedController.cs
+++ b/EmbeddedPropEditorExample/EmbeddedController.cs
@@ -31,10 +31,10 @@ private string GetMIMEType(string fileId)
             }
             if (fileId.EndsWith(".css"))
             {
-                return "text/stylesheet";
+                return "text/css";
             }
             return "text";
         }
        
     }
-}
\ No newline at end of file
+}