diff --git a/Example/HCaptcha_Tests/Core/HCaptchaWebViewManager__Tests.swift b/Example/HCaptcha_Tests/Core/HCaptchaWebViewManager__Tests.swift
index 5b03464..a43e01d 100644
--- a/Example/HCaptcha_Tests/Core/HCaptchaWebViewManager__Tests.swift
+++ b/Example/HCaptcha_Tests/Core/HCaptchaWebViewManager__Tests.swift
@@ -571,7 +571,7 @@ class HCaptchaWebViewManager__Tests: XCTestCase {
             }
         }
 
-        let manager = HCaptchaWebViewManager(messageBody: "{token: key, action: \"openExternalPage\"}",
+        let manager = HCaptchaWebViewManager(messageBody: "{action: \"openExternalPage\"}",
                                              apiKey: apiKey,
                                              urlOpener: TestURLOpener(exp1, exp2))
         manager.configureWebView { _ in
@@ -617,4 +617,34 @@ class HCaptchaWebViewManager__Tests: XCTestCase {
 
         waitForExpectations(timeout: 10)
     }
+
+    func test__Validate_Passive_Key_On_Nil_View() {
+        let exp = expectation(description: "wait for completion")
+
+        let manager = HCaptchaWebViewManager(messageBody: "{token: \"success-token\"}", passiveApiKey: true)
+        manager.shouldResetOnError = false
+        manager.completion = { response in
+            XCTAssertEqual(try? response.dematerialize(), "success-token")
+            exp.fulfill()
+        }
+        manager.validate(on: nil)
+
+        waitForExpectations(timeout: 10)
+    }
+
+    func test__Validate_Non_Passive_Key_On_Nil_View() {
+        let exp = expectation(description: "didLoad never called")
+
+        let manager = HCaptchaWebViewManager(messageBody: "{token: \"should-not-be-delivered\"}", passiveApiKey: false)
+        manager.shouldResetOnError = false
+
+        manager.completion = { response in
+            XCTAssertEqual(HCaptchaError.failedSetup, response.error)
+            exp.fulfill()
+        }
+
+        manager.validate(on: nil)
+
+        waitForExpectations(timeout: 10)
+    }
 }
diff --git a/HCaptcha/Classes/HCaptcha.swift b/HCaptcha/Classes/HCaptcha.swift
index 09a1ce0..2f02a76 100644
--- a/HCaptcha/Classes/HCaptcha.swift
+++ b/HCaptcha/Classes/HCaptcha.swift
@@ -139,7 +139,8 @@ public class HCaptcha: NSObject {
      Starts the challenge validation
     */
     @objc
-    public func validate(on view: UIView, resetOnError: Bool = true, completion: @escaping (HCaptchaResult) -> Void) {
+    public func validate(on view: UIView? = nil, resetOnError: Bool = true,
+                         completion: @escaping (HCaptchaResult) -> Void) {
         Log.debug(".validate on: \(view) resetOnError: \(resetOnError)")
 
         manager.shouldResetOnError = resetOnError
diff --git a/HCaptcha/Classes/HCaptchaWebViewManager.swift b/HCaptcha/Classes/HCaptchaWebViewManager.swift
index 4cb3ee9..524b711 100644
--- a/HCaptcha/Classes/HCaptchaWebViewManager.swift
+++ b/HCaptcha/Classes/HCaptchaWebViewManager.swift
@@ -148,11 +148,16 @@ internal class HCaptchaWebViewManager: NSObject {
 
      Starts the challenge validation
      */
-    func validate(on view: UIView) {
+    func validate(on view: UIView?) {
         Log.debug("WebViewManager.validate on: \(view)")
         resultHandled = false
 
         if !passiveApiKey {
+            guard let view = view else {
+                completion?(HCaptchaResult(self, error: .failedSetup))
+                return
+            }
+
             view.addSubview(webView)
             if self.didFinishLoading && (webView.bounds.size == CGSize.zero || webView.bounds.size == webViewInitSize) {
                 self.doConfigureWebView()