diff --git a/Gemini-iOS/PreferencesView.swift b/Gemini-iOS/PreferencesView.swift
index 9516acd..d1009c0 100644
--- a/Gemini-iOS/PreferencesView.swift
+++ b/Gemini-iOS/PreferencesView.swift
@@ -21,6 +21,9 @@ struct PreferencesView: View {
             .insetOrGroupedListStyle()
             .navigationBarItems(trailing: doneButton)
         }
+        .onDisappear {
+            Preferences.save()
+        }
     }
     
     private var doneButton: some View {