diff --git a/Packages/ComposeUI/Sources/ComposeUI/Controllers/ComposeController.swift b/Packages/ComposeUI/Sources/ComposeUI/Controllers/ComposeController.swift
index d230f570..0d10d17e 100644
--- a/Packages/ComposeUI/Sources/ComposeUI/Controllers/ComposeController.swift
+++ b/Packages/ComposeUI/Sources/ComposeUI/Controllers/ComposeController.swift
@@ -44,7 +44,7 @@ public final class ComposeController: ViewController {
     @Published var isShowingSaveDraftSheet = false
     @Published var isShowingDraftsList = false
     @Published var poster: PostService?
-    @Published var postError: (any Error)?
+    @Published var postError: PostService.Error?
     @Published public private(set) var didPostSuccessfully = false
     
     var isPosting: Bool {