diff --git a/mastodon/src/main/java/org/joinmastodon/android/ui/utils/UiUtils.java b/mastodon/src/main/java/org/joinmastodon/android/ui/utils/UiUtils.java
index a77b30ca43..80a9cbb5f6 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/ui/utils/UiUtils.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/ui/utils/UiUtils.java
@@ -973,7 +973,7 @@ public static void setUserPreferredTheme(Context context, @Nullable AccountSessi
 			default -> R.style.Theme_Mastodon_AutoLightDark;
 		});
 
-		AccountLocalPreferences prefs=session.getLocalPreferences();
+		AccountLocalPreferences prefs=session != null ? session.getLocalPreferences() : null;
 		AccountLocalPreferences.ColorPreference color=prefs != null ? prefs.color : AccountLocalPreferences.ColorPreference.MATERIAL3;
 		ColorPalette palette = ColorPalette.palettes.get(color);
 		if (palette != null) palette.apply(context, theme);