diff --git a/src/models/actions/CreateUser.ts b/src/models/actions/CreateUser.ts
index 1f80ee3..041bd8e 100644
--- a/src/models/actions/CreateUser.ts
+++ b/src/models/actions/CreateUser.ts
@@ -67,7 +67,7 @@ export class CreateUser {
      * Optional.
      */
     @IsOptional()
-    group?: number[] | number
+    groups?: number[] | number
 
     //TODO: ProfilePics
 
@@ -95,13 +95,16 @@ export class CreateUser {
         return newUser;
     }
 
+    /**
+     * Get's all groups for this user by their id's;
+     */
     public async getGroups() {
-        if (!this.group) { return null; }
+        if (!this.groups) { return null; }
         let groups = new Array<UserGroup>();
-        if (!Array.isArray(this.group)) {
-            this.group = [this.group]
+        if (!Array.isArray(this.groups)) {
+            this.groups = [this.groups]
         }
-        for (let group of this.group) {
+        for (let group of this.groups) {
             let found = await getConnectionManager().get().getRepository(UserGroup).findOne({ id: group });
             if (!found) { throw new UserGroupNotFoundError(); }
             groups.push(found);
diff --git a/src/seeds/SeedUsers.ts b/src/seeds/SeedUsers.ts
index dae3b17..38027dd 100644
--- a/src/seeds/SeedUsers.ts
+++ b/src/seeds/SeedUsers.ts
@@ -29,7 +29,7 @@ export default class SeedUsers implements Seeder {
         initialUser.lastname = "demo";
         initialUser.username = "demo";
         initialUser.password = "demo";
-        initialUser.group = group;
+        initialUser.groups = group;
         return await connection.getRepository(User).save(await initialUser.toUser());
     }