diff --git a/backend/model/mongoose/MongoUserManager.ts b/backend/model/mongoose/MongoUserManager.ts
index ca705ad6..3b772610 100644
--- a/backend/model/mongoose/MongoUserManager.ts
+++ b/backend/model/mongoose/MongoUserManager.ts
@@ -1,42 +1,36 @@
 import {User, UserRoles} from "../../../common/entities/User";
 import {IUserManager} from "../IUserManager";
-import {DatabaseManager} from "./DatabaseManager";
+import {UserModel} from "./entities/UserModel";
 
 export class MongoUserManager implements IUserManager {
 
-    private UserModel;
 
     constructor() {
-        this.UserModel = DatabaseManager.getInstance().getModel('user', {
-            name: {type: String, index: {unique: true}},
-            password: String,
-            role: Number
-        });
     }
 
     public findOne(filter, cb:(error:any, result:User) => void) {
-        return this.UserModel.findOne(filter, function (err, result) {
+        return UserModel.findOne(filter, function (err, result) {
             return cb(err, result);
         });
     }
 
     public find(filter, cb:(error:any, result:Array<User>) => void) {
-        this.UserModel.find(filter, function (err, result) {
+        UserModel.find(filter, function (err, result) {
             return cb(err, result);
         });
     }
 
     public createUser(user, cb:(error:any, result:User) => void) {
-        this.UserModel.create(user, cb);
+        UserModel.create(user, cb);
     }
 
     public deleteUser(id:number, cb:(error:any) => void) {
-        this.UserModel.remove({id: id}, cb);
+        UserModel.remove({id: id}, cb);
     }
  
 
     public changeRole(id:number, newRole:UserRoles, cb:(error:any, result:string) => void) {
-        return this.UserModel.update({id: id}, {role: newRole}, function (err) {
+        return UserModel.update({id: id}, {role: newRole}, function (err) {
             if (!err) {
                 return cb(err, "ok")
             }
diff --git a/backend/model/mongoose/entities/UserModel.ts b/backend/model/mongoose/entities/UserModel.ts
new file mode 100644
index 00000000..0ff38e9c
--- /dev/null
+++ b/backend/model/mongoose/entities/UserModel.ts
@@ -0,0 +1,6 @@
+import {DatabaseManager} from "../DatabaseManager";
+export var UserModel = DatabaseManager.getInstance().getModel('user', {
+    name: {type: String, index: {unique: true}},
+    password: String,
+    role: Number
+});
\ No newline at end of file