diff --git a/src/models/user.js b/src/models/user.js
index c59de02133..3a090084fb 100644
--- a/src/models/user.js
+++ b/src/models/user.js
@@ -208,7 +208,7 @@ var UserSchema = new Schema({
   },
   preferences: {
     armorSet: String,
-    dayStart: {type:Number, 'default': 0},
+    dayStart: {type:Number, 'default': 0, min: 0, max: 24},
     size: {type:String, enum: ['broad','slim'], 'default': 'broad'},
     hair: {
       color: {type: String, 'default': 'blond'},