Remove the `.Provider.` bit.
diff --git a/openstack/networking/v2/ports/requests.go b/openstack/networking/v2/ports/requests.go
index 78aebae..8210801 100644
--- a/openstack/networking/v2/ports/requests.go
+++ b/openstack/networking/v2/ports/requests.go
@@ -82,7 +82,7 @@
 func Get(c *gophercloud.ServiceClient, id string) GetResult {
 	var res GetResult
 	_, res.Err = perigee.Request("GET", getURL(c, id), perigee.Options{
-		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		MoreHeaders: c.AuthenticatedHeaders(),
 		Results:     &res.Body,
 		OkCodes:     []int{200},
 	})
@@ -160,7 +160,7 @@
 
 	// Response
 	_, res.Err = perigee.Request("POST", createURL(c), perigee.Options{
-		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		MoreHeaders: c.AuthenticatedHeaders(),
 		ReqBody:     &reqBody,
 		Results:     &res.Body,
 		OkCodes:     []int{201},
@@ -226,7 +226,7 @@
 	}
 
 	_, res.Err = perigee.Request("PUT", updateURL(c, id), perigee.Options{
-		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		MoreHeaders: c.AuthenticatedHeaders(),
 		ReqBody:     &reqBody,
 		Results:     &res.Body,
 		OkCodes:     []int{200, 201},
@@ -238,7 +238,7 @@
 func Delete(c *gophercloud.ServiceClient, id string) DeleteResult {
 	var res DeleteResult
 	_, res.Err = perigee.Request("DELETE", deleteURL(c, id), perigee.Options{
-		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		MoreHeaders: c.AuthenticatedHeaders(),
 		OkCodes:     []int{204},
 	})
 	return res