diff --git a/openstack/identity/v3/tokens/requests_test.go b/openstack/identity/v3/tokens/requests_test.go
index 989c1c4..d0813ac 100644
--- a/openstack/identity/v3/tokens/requests_test.go
+++ b/openstack/identity/v3/tokens/requests_test.go
@@ -402,7 +402,7 @@
 
 	testhelper.Mux.HandleFunc("/auth/tokens", func(w http.ResponseWriter, r *http.Request) {
 		testhelper.TestMethod(t, r, "GET")
-		testhelper.TestHeader(t, r, "Content-Type", "application/json")
+		testhelper.TestHeader(t, r, "Content-Type", "")
 		testhelper.TestHeader(t, r, "Accept", "application/json")
 		testhelper.TestHeader(t, r, "X-Auth-Token", "12345abcdef")
 		testhelper.TestHeader(t, r, "X-Subject-Token", "abcdef12345")
@@ -439,7 +439,7 @@
 
 	testhelper.Mux.HandleFunc("/auth/tokens", func(w http.ResponseWriter, r *http.Request) {
 		testhelper.TestMethod(t, r, expectedMethod)
-		testhelper.TestHeader(t, r, "Content-Type", "application/json")
+		testhelper.TestHeader(t, r, "Content-Type", "")
 		testhelper.TestHeader(t, r, "Accept", "application/json")
 		testhelper.TestHeader(t, r, "X-Auth-Token", "12345abcdef")
 		testhelper.TestHeader(t, r, "X-Subject-Token", "abcdef12345")