diff --git a/Tusker/Views/Profile Header/ProfileHeaderView.swift b/Tusker/Views/Profile Header/ProfileHeaderView.swift
index c0ce4bb5fd..a22cd2427e 100644
--- a/Tusker/Views/Profile Header/ProfileHeaderView.swift	
+++ b/Tusker/Views/Profile Header/ProfileHeaderView.swift	
@@ -93,6 +93,7 @@ class ProfileHeaderView: UIView {
     func updateUI(for accountID: String) {
         self.accountID = accountID
         
+        guard let mastodonController = mastodonController else { return }
         guard let account = mastodonController.persistentContainer.account(for: accountID) else {
             fatalError("Missing cached account \(accountID)")
         }