diff --git a/core/models.js b/core/models.js
index 0bd8f83..cd45088 100644
--- a/core/models.js
+++ b/core/models.js
@@ -24,6 +24,10 @@ const sequelize = new Sequelize(
         dialect: 'mysql',
         operatorAliases: false,
         logging: config.debug,
+        define: {
+            charset: 'utf8',
+            collate: 'utf8_general_ci',
+        },        
         pool: {
             max: 140,
             min: 0,
diff --git a/modules/notification/notification.model.js b/modules/notification/notification.model.js
index eb8e66c..469ec2f 100644
--- a/modules/notification/notification.model.js
+++ b/modules/notification/notification.model.js
@@ -37,7 +37,7 @@ module.exports = function (sequelize, DataTypes) {
     });
 
     Notification.associate = function (models) {
-        //Notification.User = Notification.belongsTo(models.User, { foreignKey: 'userId', as: "user" });
+        Notification.User = Notification.belongsTo(models.User, { foreignKey: 'userId', as: "user" });
         Notification.Details = Notification.hasMany(models.NotificationDetail, { foreignKey: 'notificationId', as: 'details' });
     };