diff --git a/context.go b/context.go
index a9458833..a2802183 100644
--- a/context.go
+++ b/context.go
@@ -29,7 +29,6 @@ const (
 	MIMEJSON              = binding.MIMEJSON
 	MIMEHTML              = binding.MIMEHTML
 	MIMEXML               = binding.MIMEXML
-	MIMEXML2              = binding.MIMEXML2
 	MIMEPlain             = binding.MIMEPlain
 	MIMEPOSTForm          = binding.MIMEPOSTForm
 	MIMEMultipartPOSTForm = binding.MIMEMultipartPOSTForm