diff --git a/Sources/ComposableArchitecture/Internal/NavigationID.swift b/Sources/ComposableArchitecture/Internal/NavigationID.swift
index e8a1ba8624fc..f92b7970f658 100644
--- a/Sources/ComposableArchitecture/Internal/NavigationID.swift
+++ b/Sources/ComposableArchitecture/Internal/NavigationID.swift
@@ -15,7 +15,7 @@ private enum NavigationIDKey: DependencyKey {
 
 @usableFromInline
 struct NavigationID: Hashable, Identifiable, Sendable {
-  var path: [AnyHashableSendable] = []
+  fileprivate var path: [AnyHashableSendable] = []
 
   @usableFromInline
   var id: Self { self }