diff --git a/Samples/TicTacToe/Sources/Authentication/LoginScreen.swift b/Samples/TicTacToe/Sources/Authentication/LoginScreen.swift
index 305b0aac3..2219a212a 100644
--- a/Samples/TicTacToe/Sources/Authentication/LoginScreen.swift
+++ b/Samples/TicTacToe/Sources/Authentication/LoginScreen.swift
@@ -18,8 +18,8 @@ import SwiftUI
 import Workflow
 import WorkflowSwiftUI
 
-struct LoginScreen: SwiftUIScreen {
-    var actionSink: Sink<LoginWorkflow.Action>
+struct LoginScreen: SwiftUIScreen, Equatable {
+    var actionSink: ScreenActionSink<LoginWorkflow.Action>
     var title: String
     var email: String
     var password: String
diff --git a/Samples/TicTacToe/Sources/Authentication/LoginWorkflow.swift b/Samples/TicTacToe/Sources/Authentication/LoginWorkflow.swift
index 885ce6cd2..f3149f37a 100644
--- a/Samples/TicTacToe/Sources/Authentication/LoginWorkflow.swift
+++ b/Samples/TicTacToe/Sources/Authentication/LoginWorkflow.swift
@@ -73,7 +73,7 @@ extension LoginWorkflow {
 
     func render(state: LoginWorkflow.State, context: RenderContext<LoginWorkflow>) -> Rendering {
         LoginScreen(
-            actionSink: context.makeSink(of: Action.self),
+            actionSink: .init(context.makeSink(of: Action.self)),
             title: "Welcome! Please log in to play TicTacToe!",
             email: state.email,
             password: state.password
diff --git a/WorkflowSwiftUI/Sources/ObservableValue.swift b/WorkflowSwiftUI/Sources/ObservableValue.swift
index e38a4c396..f10640574 100644
--- a/WorkflowSwiftUI/Sources/ObservableValue.swift
+++ b/WorkflowSwiftUI/Sources/ObservableValue.swift
@@ -105,6 +105,23 @@ public final class ObservableValue<Value>: ObservableObject {
     }
 }
 
+public struct ScreenActionSink<Value>: Equatable {
+    private let sink: Sink<Value>
+
+    // TODO: Only allow this to be initialized by `WorkflowNode.SubtreeManager.Context`?
+    public init(_ sink: Sink<Value>) {
+        self.sink = sink
+    }
+
+    public func send(_ value: Value) {
+        sink.send(value)
+    }
+
+    public static func == (lhs: ScreenActionSink<Value>, rhs: ScreenActionSink<Value>) -> Bool {
+        true
+    }
+}
+
 #if canImport(UIKit)
 
 public extension ObservableValue where Value: SwiftUIScreen {
diff --git a/WorkflowSwiftUI/Sources/SwiftUIScreen.swift b/WorkflowSwiftUI/Sources/SwiftUIScreen.swift
index 068e64bd8..72abd1ab2 100644
--- a/WorkflowSwiftUI/Sources/SwiftUIScreen.swift
+++ b/WorkflowSwiftUI/Sources/SwiftUIScreen.swift
@@ -27,7 +27,7 @@ public protocol SwiftUIScreen: Screen {
     @ViewBuilder
     static func makeView(model: ObservableValue<Self>) -> Content
 
-    var actionSink: Sink<Action> { get }
+    var actionSink: ScreenActionSink<Action> { get }
 
     static var isDuplicate: ((Self, Self) -> Bool)? { get }
 }