diff --git a/Tusker/Screens/Onboarding/OnboardingViewController.swift b/Tusker/Screens/Onboarding/OnboardingViewController.swift
index 6e25933f..7df60929 100644
--- a/Tusker/Screens/Onboarding/OnboardingViewController.swift
+++ b/Tusker/Screens/Onboarding/OnboardingViewController.swift
@@ -67,7 +67,7 @@ extension OnboardingViewController: InstanceSelectorTableViewControllerDelegate
                     let url = url,
                     let components = URLComponents(url: url, resolvingAgainstBaseURL: true),
                     let item = components.queryItems?.first(where: { $0.name == "code" }),
-                    let authCode = item.value else { fatalError() }
+                    let authCode = item.value else { return }
                 
                 MastodonController.authorize(authorizationCode: authCode) {
                     DispatchQueue.main.async {