diff --git a/CHANGELOG.md b/CHANGELOG.md
index f3e871b..7e4fa94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 ## Unreleased
+### Changed
+- Fix `privatenetwork/create` and `/details` request struct.
 
 ## [8.3.0] - 2024-09-11
 ### Added
diff --git a/privatenetworks.go b/privatenetworks.go
index 0c01c50..43af593 100644
--- a/privatenetworks.go
+++ b/privatenetworks.go
@@ -62,7 +62,9 @@ func (s *PrivateNetworkService) Create(context context.Context, name string) (*P
 			PrivateNetwork PrivateNetwork
 		}
 	}{}
-	err := s.client.post(context, "privatenetwork/create", &data, name)
+	err := s.client.post(context, "privatenetwork/create", &data, struct {
+		Name string `json:"name"`
+	}{name})
 	return &data.Response.PrivateNetwork, err
 }
 
@@ -73,7 +75,9 @@ func (s *PrivateNetworkService) Details(context context.Context, privateNetworkI
 			PrivateNetwork PrivateNetwork
 		}
 	}{}
-	err := s.client.post(context, "privatenetwork/details", &data, privateNetworkID)
+	err := s.client.post(context, "privatenetwork/details", &data, struct {
+		PrivateNetworkID string `json:"privatenetworkid"`
+	}{privateNetworkID})
 	return &data.Response.PrivateNetwork, err
 }
 
diff --git a/privatenetworks_test.go b/privatenetworks_test.go
index 4fa3961..2e09360 100644
--- a/privatenetworks_test.go
+++ b/privatenetworks_test.go
@@ -140,7 +140,7 @@ func TestPrivateNetworkSegmentsDestroy(t *testing.T) {
 	c := &mockClient{}
 	n := PrivateNetworkService{client: c}
 
-	n.DestroySegment(context.Background(), "pn-123ab")
+	n.DestroySegment(context.Background(), "266979ab-1e05-4fbc-b9e0-577f31c0d2e9")
 
 	assert.Equal(t, "POST", c.lastMethod, "method used is correct")
 	assert.Equal(t, "privatenetwork/deletesegment", c.lastPath, "path used is correct")