diff --git a/src/controllers/RunnerTeamController.ts b/src/controllers/RunnerTeamController.ts
index 3e1212f..c9c4d5c 100644
--- a/src/controllers/RunnerTeamController.ts
+++ b/src/controllers/RunnerTeamController.ts
@@ -1,9 +1,9 @@
 import { Body, Delete, Get, JsonController, OnUndefined, Param, Post, Put, QueryParam } from 'routing-controllers';
 import { OpenAPI, ResponseSchema } from 'routing-controllers-openapi';
 import { getConnectionManager, Repository } from 'typeorm';
-import { EntityFromBody } from 'typeorm-routing-controllers-extensions';
 import { RunnerTeamHasRunnersError, RunnerTeamIdsNotMatchingError, RunnerTeamNotFoundError } from '../errors/RunnerTeamErrors';
 import { CreateRunnerTeam } from '../models/actions/CreateRunnerTeam';
+import { UpdateRunnerTeam } from '../models/actions/UpdateRunnerTeam';
 import { RunnerTeam } from '../models/entities/RunnerTeam';
 import { ResponseEmpty } from '../models/responses/ResponseEmpty';
 import { ResponseRunnerTeam } from '../models/responses/ResponseRunnerTeam';
@@ -67,7 +67,7 @@ export class RunnerTeamController {
 	@ResponseSchema(RunnerTeamNotFoundError, { statusCode: 404 })
 	@ResponseSchema(RunnerTeamIdsNotMatchingError, { statusCode: 406 })
 	@OpenAPI({ description: "Update a runnerTeam object (id can't be changed)." })
-	async put(@Param('id') id: number, @EntityFromBody() runnerTeam: RunnerTeam) {
+	async put(@Param('id') id: number, @Body({ validate: true }) runnerTeam: UpdateRunnerTeam) {
 		let oldRunnerTeam = await this.runnerTeamRepository.findOne({ id: id }, { relations: ['parentGroup', 'contact'] });
 
 		if (!oldRunnerTeam) {
@@ -78,10 +78,9 @@ export class RunnerTeamController {
 			throw new RunnerTeamIdsNotMatchingError();
 		}
 
-		await this.runnerTeamRepository.update(oldRunnerTeam, runnerTeam);
+		await this.runnerTeamRepository.update(oldRunnerTeam, await runnerTeam.toRunnerTeam());
 
-		runnerTeam = await this.runnerTeamRepository.findOne(runnerTeam, { relations: ['parentGroup', 'contact'] });
-		return new ResponseRunnerTeam(runnerTeam);
+		return new ResponseRunnerTeam(await this.runnerTeamRepository.findOne({ id: runnerTeam.id }, { relations: ['parentGroup', 'contact'] }));
 	}
 
 	@Delete('/:id')
diff --git a/src/models/actions/CreateRunnerGroup.ts b/src/models/actions/CreateRunnerGroup.ts
index 288baeb..f237f40 100644
--- a/src/models/actions/CreateRunnerGroup.ts
+++ b/src/models/actions/CreateRunnerGroup.ts
@@ -23,7 +23,7 @@ export abstract class CreateRunnerGroup {
      * Get's this group's contact from this.address.
      */
     public async getContact(): Promise<GroupContact> {
-        if (this.contact === undefined) {
+        if (this.contact === undefined || this.contact === null) {
             return null;
         }
         if (!isNaN(this.contact)) {
diff --git a/src/models/actions/UpdateRunnerTeam.ts b/src/models/actions/UpdateRunnerTeam.ts
new file mode 100644
index 0000000..0028cf8
--- /dev/null
+++ b/src/models/actions/UpdateRunnerTeam.ts
@@ -0,0 +1,50 @@
+import { IsInt, IsNotEmpty, IsObject } from 'class-validator';
+import { getConnectionManager } from 'typeorm';
+import { RunnerOrganisationNotFoundError, RunnerOrganisationWrongTypeError } from '../../errors/RunnerOrganisationErrors';
+import { RunnerTeamNeedsParentError } from '../../errors/RunnerTeamErrors';
+import { RunnerOrganisation } from '../entities/RunnerOrganisation';
+import { RunnerTeam } from '../entities/RunnerTeam';
+import { CreateRunnerGroup } from './CreateRunnerGroup';
+
+export class UpdateRunnerTeam extends CreateRunnerGroup {
+
+    /**
+     * The updated team's id.
+     */
+    @IsInt()
+    id: number;
+
+    /**
+     * The team's parent group (organisation).
+     */
+    @IsObject()
+    @IsNotEmpty()
+    parentGroup: RunnerOrganisation;
+
+    public async getParent(): Promise<RunnerOrganisation> {
+        if (this.parentGroup === undefined) {
+            throw new RunnerTeamNeedsParentError();
+        }
+        if (!isNaN(this.parentGroup.id)) {
+            let parentGroup = await getConnectionManager().get().getRepository(RunnerOrganisation).findOne({ id: this.parentGroup.id });
+            if (!parentGroup) { throw new RunnerOrganisationNotFoundError();; }
+            return parentGroup;
+        }
+
+        throw new RunnerOrganisationWrongTypeError;
+    }
+
+    /**
+     * Creates a RunnerTeam entity from this.
+     */
+    public async toRunnerTeam(): Promise<RunnerTeam> {
+        let newRunnerTeam: RunnerTeam = new RunnerTeam();
+
+        newRunnerTeam.id = this.id;
+        newRunnerTeam.name = this.name;
+        newRunnerTeam.parentGroup = await this.getParent();
+        newRunnerTeam.contact = await this.getContact()
+
+        return newRunnerTeam;
+    }
+}
\ No newline at end of file