diff --git a/Tusker/Screens/Main/MainTabBarViewController.swift b/Tusker/Screens/Main/MainTabBarViewController.swift
index a2a0adf1..dc3b81b3 100644
--- a/Tusker/Screens/Main/MainTabBarViewController.swift
+++ b/Tusker/Screens/Main/MainTabBarViewController.swift
@@ -141,8 +141,8 @@ class MainTabBarViewController: UITabBarController, UITabBarControllerDelegate {
             return
         }
         NSLayoutConstraint.deactivate(fastSwitcherConstraints)
-        // using interfaceOrientation isn't ideal, but UITabBar buttons may lay out horizontally even in the compact size class
-        if traitCollection.horizontalSizeClass == .compact && interfaceOrientation.isPortrait {
+        let isPortrait = view.bounds.width < view.bounds.height
+        if traitCollection.horizontalSizeClass == .compact && isPortrait {
             fastSwitcherConstraints = [
                 fastSwitcherIndicator.centerYAnchor.constraint(equalTo: myProfileButton.centerYAnchor, constant: -4),
                 // tab bar button image width is 30