diff --git a/openstack/identity/v2/extensions/admin/roles/results.go b/openstack/identity/v2/extensions/admin/roles/results.go
index 608f206..28de6bb 100644
--- a/openstack/identity/v2/extensions/admin/roles/results.go
+++ b/openstack/identity/v2/extensions/admin/roles/results.go
@@ -26,18 +26,17 @@
 }
 
 // IsEmpty determines whether or not a page of Tenants contains any results.
-func (page RolePage) IsEmpty() (bool, error) {
-	users, err := ExtractRoles(page)
+func (r RolePage) IsEmpty() (bool, error) {
+	users, err := ExtractRoles(r)
 	return len(users) == 0, err
 }
 
 // ExtractRoles returns a slice of roles contained in a single page of results.
-func ExtractRoles(page pagination.Page) ([]Role, error) {
-	r := page.(RolePage)
+func ExtractRoles(r pagination.Page) ([]Role, error) {
 	var s struct {
 		Roles []Role `json:"roles"`
 	}
-	err := r.ExtractInto(&s)
+	err := (r.(RolePage)).ExtractInto(&s)
 	return s.Roles, err
 }
 
diff --git a/openstack/identity/v2/tenants/results.go b/openstack/identity/v2/tenants/results.go
index bf52554..3ce1e67 100644
--- a/openstack/identity/v2/tenants/results.go
+++ b/openstack/identity/v2/tenants/results.go
@@ -26,17 +26,17 @@
 }
 
 // IsEmpty determines whether or not a page of Tenants contains any results.
-func (page TenantPage) IsEmpty() (bool, error) {
-	tenants, err := ExtractTenants(page)
+func (r TenantPage) IsEmpty() (bool, error) {
+	tenants, err := ExtractTenants(r)
 	return len(tenants) == 0, err
 }
 
 // NextPageURL extracts the "next" link from the tenants_links section of the result.
-func (page TenantPage) NextPageURL() (string, error) {
+func (r TenantPage) NextPageURL() (string, error) {
 	var s struct {
 		Links []gophercloud.Link `json:"tenants_links"`
 	}
-	err := page.ExtractInto(&s)
+	err := r.ExtractInto(&s)
 	if err != nil {
 		return "", err
 	}
@@ -44,11 +44,10 @@
 }
 
 // ExtractTenants returns a slice of Tenants contained in a single page of results.
-func ExtractTenants(page pagination.Page) ([]Tenant, error) {
-	r := page.(TenantPage)
+func ExtractTenants(r pagination.Page) ([]Tenant, error) {
 	var s struct {
 		Tenants []Tenant `json:"tenants"`
 	}
-	err := r.ExtractInto(&s)
+	err := (r.(TenantPage)).ExtractInto(&s)
 	return s.Tenants, err
 }
diff --git a/openstack/identity/v2/users/results.go b/openstack/identity/v2/users/results.go
index c353c61..c493383 100644
--- a/openstack/identity/v2/users/results.go
+++ b/openstack/identity/v2/users/results.go
@@ -47,34 +47,32 @@
 }
 
 // IsEmpty determines whether or not a page of Tenants contains any results.
-func (page UserPage) IsEmpty() (bool, error) {
-	users, err := ExtractUsers(page)
+func (r UserPage) IsEmpty() (bool, error) {
+	users, err := ExtractUsers(r)
 	return len(users) == 0, err
 }
 
 // ExtractUsers returns a slice of Tenants contained in a single page of results.
-func ExtractUsers(page pagination.Page) ([]User, error) {
-	r := page.(UserPage)
+func ExtractUsers(r pagination.Page) ([]User, error) {
 	var s struct {
 		Users []User `json:"users"`
 	}
-	err := r.ExtractInto(&s)
+	err := (r.(UserPage)).ExtractInto(&s)
 	return s.Users, err
 }
 
 // IsEmpty determines whether or not a page of Tenants contains any results.
-func (page RolePage) IsEmpty() (bool, error) {
-	users, err := ExtractRoles(page)
+func (r RolePage) IsEmpty() (bool, error) {
+	users, err := ExtractRoles(r)
 	return len(users) == 0, err
 }
 
 // ExtractRoles returns a slice of Roles contained in a single page of results.
-func ExtractRoles(page pagination.Page) ([]Role, error) {
-	r := page.(RolePage)
+func ExtractRoles(r pagination.Page) ([]Role, error) {
 	var s struct {
 		Roles []Role `json:"roles"`
 	}
-	err := r.ExtractInto(&s)
+	err := (r.(RolePage)).ExtractInto(&s)
 	return s.Roles, err
 }