diff --git a/amazonclouddrive/amazonclouddrive.go b/amazonclouddrive/amazonclouddrive.go
index 065a93ba3..595068c4e 100644
--- a/amazonclouddrive/amazonclouddrive.go
+++ b/amazonclouddrive/amazonclouddrive.go
@@ -27,6 +27,7 @@ import (
 	"github.com/ncw/rclone/fs"
 	"github.com/ncw/rclone/oauthutil"
 	"github.com/ncw/rclone/pacer"
+	"github.com/ncw/rclone/rest"
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"
 	"golang.org/x/oauth2"
@@ -811,7 +812,7 @@ func (o *Object) Open(options ...fs.OpenOption) (in io.ReadCloser, err error) {
 		if !bigObject {
 			in, resp, err = file.OpenHeaders(headers)
 		} else {
-			in, resp, err = file.OpenTempURLHeaders(o.fs.noAuthClient, headers)
+			in, resp, err = file.OpenTempURLHeaders(rest.ClientWithHeaderReset(o.fs.noAuthClient, headers), headers)
 		}
 		return o.fs.shouldRetry(resp, err)
 	})
diff --git a/rest/rest.go b/rest/rest.go
index 5907074c0..d3105b6b3 100644
--- a/rest/rest.go
+++ b/rest/rest.go
@@ -93,8 +93,9 @@ func DecodeJSON(resp *http.Response, result interface{}) (err error) {
 	return decoder.Decode(result)
 }
 
-// Make a new http client which resets the headers passed in on redirect
-func clientWithHeaderReset(c *http.Client, headers map[string]string) *http.Client {
+// ClientWithHeaderReset makes a new http client which resets the
+// headers passed in on redirect
+func ClientWithHeaderReset(c *http.Client, headers map[string]string) *http.Client {
 	if len(headers) == 0 {
 		return c
 	}
@@ -169,7 +170,7 @@ func (api *Client) Call(opts *Opts) (resp *http.Response, err error) {
 	if opts.UserName != "" || opts.Password != "" {
 		req.SetBasicAuth(opts.UserName, opts.Password)
 	}
-	c := clientWithHeaderReset(api.c, headers)
+	c := ClientWithHeaderReset(api.c, headers)
 	api.mu.RUnlock()
 	resp, err = c.Do(req)
 	api.mu.RLock()