diff --git a/handler.go b/handler.go
index 6da7fe7..7aa6278 100644
--- a/handler.go
+++ b/handler.go
@@ -132,4 +132,6 @@ func ToFile(name string) ResponseHandler {
 }
 
 // ToHeaders is an alias for backwards compatibility.
+//
+// Deprecated: Use CopyHeaders
 var ToHeaders = CopyHeaders