diff --git a/src/models/actions/CreateAuth.ts b/src/models/actions/CreateAuth.ts
index a29f28a..2584aa2 100644
--- a/src/models/actions/CreateAuth.ts
+++ b/src/models/actions/CreateAuth.ts
@@ -27,7 +27,7 @@ export class CreateAuth {
         if (!this.password) {
             throw new PasswordNeededError();
         }
-        const found_user = await getConnectionManager().get().getRepository(User).findOne({ relations: ['groups', 'permissions'], where: [{ username: this.username }, { email: this.email }] });
+        const found_user = await getConnectionManager().get().getRepository(User).findOne({ relations: ['groups', 'permissions', 'groups.permissions'], where: [{ username: this.username }, { email: this.email }] });
         if (!found_user) {
             throw new UserNotFoundError();
         }
diff --git a/src/models/actions/CreateUser.ts b/src/models/actions/CreateUser.ts
index 7b7fb29..1f80ee3 100644
--- a/src/models/actions/CreateUser.ts
+++ b/src/models/actions/CreateUser.ts
@@ -101,22 +101,11 @@ export class CreateUser {
         if (!Array.isArray(this.group)) {
             this.group = [this.group]
         }
-        const groupIDs: number[] = this.group
-        let errors = 0
-        const validateusergroups = async () => {
-            for (const g of groupIDs) {
-                const found = await getConnectionManager().get().getRepository(UserGroup).find({ id: g });
-                if (found.length === 0) {
-                    errors++
-                } else {
-                    groups.push(found[0]);
-                }
-            }
-            return groups;
-        }
-        await validateusergroups()
-        if (errors !== 0) {
-            throw new UserGroupNotFoundError();
+        for (let group of this.group) {
+            let found = await getConnectionManager().get().getRepository(UserGroup).findOne({ id: group });
+            if (!found) { throw new UserGroupNotFoundError(); }
+            groups.push(found);
         }
+        return groups;
     }
 }
\ No newline at end of file
diff --git a/src/models/entities/User.ts b/src/models/entities/User.ts
index 27e14ba..21970c4 100644
--- a/src/models/entities/User.ts
+++ b/src/models/entities/User.ts
@@ -3,7 +3,6 @@ import { ChildEntity, Column, JoinTable, ManyToMany, OneToMany } from "typeorm";
 import { config } from '../../config';
 import { ResponsePrincipal } from '../responses/ResponsePrincipal';
 import { ResponseUser } from '../responses/ResponseUser';
-import { Permission } from './Permission';
 import { Principal } from './Principal';
 import { UserAction } from './UserAction';
 import { UserGroup } from './UserGroup';
@@ -111,24 +110,6 @@ export class User extends Principal {
   @OneToMany(() => UserAction, action => action.user, { nullable: true })
   actions: UserAction[]
 
-  /**
-   * calculate all permissions
-   */
-  public get calc_permissions(): Permission[] {
-    let final_permissions = []
-    this.groups.forEach((permission) => {
-      if (!final_permissions.includes(permission)) {
-        final_permissions.push(permission)
-      }
-    })
-    this.permissions.forEach((permission) => {
-      if (!final_permissions.includes(permission)) {
-        final_permissions.push(permission)
-      }
-    })
-    return final_permissions
-  }
-
   /**
    * Turn this into a response.
    */