diff --git a/QueueItKit/view/QueueItViewManager.swift b/QueueItKit/view/QueueItViewManager.swift
index 9d10479..ba88f2d 100644
--- a/QueueItKit/view/QueueItViewManager.swift
+++ b/QueueItKit/view/QueueItViewManager.swift
@@ -22,6 +22,11 @@ public class QueueItViewManager: NSObject, ObservableObject, WKNavigationDelegat
     private var userId: String?
     
     var isShowQueueCalled: Bool = false
+    // One-shot guard so onQueuePassed is delivered to the listener only once per
+    // queue presentation, even if the URI overrider classifies multiple navigation
+    // steps as `.passed` during the queue-exit redirect chain. Reset in showQueue
+    // so re-presentation works.
+    private var hasFiredQueuePassed: Bool = false
     
     @MainActor
     init(queueListener: QueueListener?, options: QueueItEngineOptions, webView: WKWebView?, waitingRoomDomain: String? = nil, queuePathPrefix: String? = nil) {
@@ -57,6 +62,7 @@ public class QueueItViewManager: NSObject, ObservableObject, WKNavigationDelegat
 
     public func showQueue(_ queueTryPassResult: QueueTryPassResult) {
         isShowQueueCalled = true
+        hasFiredQueuePassed = false
         guard let queueUrl = queueTryPassResult.queueUrl else {
             QueueItLogger.error(QueueItViewManager.TAG, "Cannot show queue, Queue URL is missing.")
             self.queueListener?.onError(QueueError(.invalidResponse), errorMessage: "Missing Queue URL for display")
@@ -160,6 +166,11 @@ public class QueueItViewManager: NSObject, ObservableObject, WKNavigationDelegat
         case .passed:
             QueueItLogger.info(QueueItViewManager.TAG, "Intercept: Queue Passed. Token: \(result.queueItToken ?? "nil")")
             decisionHandler(.cancel, preferences)
+            guard !self.hasFiredQueuePassed else {
+                QueueItLogger.debug(QueueItViewManager.TAG, "Intercept: Queue Passed already fired; suppressing duplicate listener callback.")
+                return
+            }
+            self.hasFiredQueuePassed = true
             self.hideQueue()
             let queuePassedInfo = QueuePassedInfo(queueItToken: result.queueItToken)
             self.queueListener?.onQueuePassed(queuePassedInfo)
diff --git a/QueueItKitTests/MockListener.swift b/QueueItKitTests/MockListener.swift
index afcc585..633831e 100644
--- a/QueueItKitTests/MockListener.swift
+++ b/QueueItKitTests/MockListener.swift
@@ -5,6 +5,7 @@ class MockListener: QueueListener {
     var expectation: XCTestExpectation?
 
     var onQueuePassedCalled = false
+    var onQueuePassedCallCount = 0
     var lastQueuePassedInfo: QueuePassedInfo?
 
     var onQueueDisabledCalled = false
@@ -23,6 +24,7 @@ class MockListener: QueueListener {
 
     func onQueuePassed(_ info: QueuePassedInfo) {
         onQueuePassedCalled = true
+        onQueuePassedCallCount += 1
         lastQueuePassedInfo = info
         expectation?.fulfill()
     }
diff --git a/QueueItKitTests/QueueItViewManagerTests.swift b/QueueItKitTests/QueueItViewManagerTests.swift
index 1e8c0a3..186dad6 100644
--- a/QueueItKitTests/QueueItViewManagerTests.swift
+++ b/QueueItKitTests/QueueItViewManagerTests.swift
@@ -1,4 +1,5 @@
 import XCTest
+import WebKit
 @testable import QueueItKit
 
 class QueueItViewManagerTests: XCTestCase {
@@ -138,7 +139,7 @@ class QueueItViewManagerTests: XCTestCase {
         // Given
         let options = QueueItEngineOptions()
         let waitingRoomDomain = "queue.mydomain.com"
-        
+
         // When
         let viewManagerWithProxy = QueueItViewManager(
             queueListener: listener,
@@ -146,10 +147,89 @@ class QueueItViewManagerTests: XCTestCase {
             webView: nil,
             waitingRoomDomain: waitingRoomDomain
         )
-        
+
         // Then
         XCTAssertNotNil(viewManagerWithProxy)
         XCTAssertNotNil(viewManagerWithProxy.webView)
     }
+
+    // MARK: - onQueuePassed dedupe
+
+    /// Three consecutive `.passed` navigation intercepts during a single queue
+    /// presentation should result in exactly one `onQueuePassed` callback to the
+    /// listener. Reproduces the case where WKWebView's queue-exit redirect chain
+    /// hits decidePolicyFor multiple times before hideQueue's about:blank load
+    /// suppresses further navigations.
+    @MainActor
+    func test_decidePolicyFor_passed_firesListenerOnceAcrossMultipleIntercepts() async {
+        // Given a viewManager configured with a known target URL so the URI
+        // overrider classifies <targetUrl>?queueittoken=... as `.passed`.
+        let targetUrl = "https://shop.example.com/checkout"
+        let queueResult = QueueTryPassResult(
+            queueItToken: "~rt_queue~initialToken",
+            queueUrl: "https://example.queue-it.net/queue",
+            targetUrl: targetUrl,
+            isPassedThrough: false,
+            redirectType: .queue,
+            urlTTLInMinutes: 5
+        )
+        viewManager?.showQueue(queueResult)
+
+        // When three queue-exit navigations arrive in sequence, each carrying a
+        // fresh queueittoken (mimicking the live SDK's behavior where every
+        // redirect step yields a regenerated token).
+        let tokens = [
+            "e_test~ts_1~q_abc~rt_queue~h_aaa",
+            "e_test~ts_2~q_abc~rt_queue~h_bbb",
+            "e_test~ts_3~q_abc~rt_queue~h_ccc"
+        ]
+        // The delegate method ignores the first arg beyond identity; a throwaway
+        // WKWebView keeps the test independent of viewManager's own webView property.
+        let stubWebView = WKWebView()
+        for token in tokens {
+            guard let url = URL(string: "\(targetUrl)?queueittoken=\(token)") else {
+                XCTFail("Could not construct test URL")
+                return
+            }
+            let action = StubMainFrameNavigationAction(url: url)
+            let expect = expectation(description: "decisionHandler called for \(token)")
+            viewManager?.webView(
+                stubWebView,
+                decidePolicyFor: action,
+                preferences: WKWebpagePreferences()
+            ) { _, _ in
+                expect.fulfill()
+            }
+            await fulfillment(of: [expect], timeout: 1.0)
+        }
+
+        // Then the listener was called exactly once and remembers the token
+        // from the *first* intercept (subsequent ones are suppressed).
+        XCTAssertEqual(listener.onQueuePassedCallCount, 1,
+                       "Expected onQueuePassed to fire once across multiple .passed intercepts")
+        XCTAssertEqual(listener.lastQueuePassedInfo?.queueItToken, tokens.first)
+    }
+}
+
+// MARK: - Test doubles
+
+/// Minimal WKNavigationAction stub that supplies a request URL and reports the
+/// target frame as the main frame so the ViewManager's intercept logic runs.
+private final class StubMainFrameNavigationAction: WKNavigationAction {
+    private let stubRequest: URLRequest
+    private let stubFrame: StubMainFrame
+
+    init(url: URL) {
+        self.stubRequest = URLRequest(url: url)
+        self.stubFrame = StubMainFrame()
+        super.init()
+    }
+
+    override var request: URLRequest { stubRequest }
+    override var targetFrame: WKFrameInfo? { stubFrame }
+}
+
+private final class StubMainFrame: WKFrameInfo {
+    override var isMainFrame: Bool { true }
 }