diff --git a/Tusker/Preferences/Preference.swift b/Tusker/Preferences/Preference.swift
index d180bac5..5b05da76 100644
--- a/Tusker/Preferences/Preference.swift
+++ b/Tusker/Preferences/Preference.swift
@@ -8,7 +8,7 @@
 import SwiftUI
 
 @propertyWrapper
-struct Preference<Value>: BindingConvertible {
+struct Preference<Value> {
     let path: WritableKeyPath<Preferences, Value>
     let binding: Binding<Value>
     
@@ -32,7 +32,7 @@ struct Preference<Value>: BindingConvertible {
 }
 
 @propertyWrapper
-struct MappedPreference<Value, PrefValue>: BindingConvertible {
+struct MappedPreference<Value, PrefValue> {
     let path: WritableKeyPath<Preferences, PrefValue>
     let fromPref: (PrefValue) -> Value
     let toPref: (Value) -> PrefValue