diff --git a/src/controllers/DonorController.ts b/src/controllers/DonorController.ts
index 5438daa..6b8fc7b 100644
--- a/src/controllers/DonorController.ts
+++ b/src/controllers/DonorController.ts
@@ -1,8 +1,8 @@
 import { Authorized, 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 { RunnerGroupNeededError, RunnerIdsNotMatchingError, RunnerNotFoundError } from '../errors/RunnerErrors';
-import { RunnerGroupNotFoundError } from '../errors/RunnerGroupErrors';
+import { DonorIdsNotMatchingError, DonorNotFoundError } from '../errors/DonorErrors';
+import { RunnerIdsNotMatchingError } from '../errors/RunnerErrors';
 import { CreateRunner } from '../models/actions/CreateRunner';
 import { UpdateRunner } from '../models/actions/UpdateRunner';
 import { Donor } from '../models/entities/Donor';
@@ -37,20 +37,18 @@ export class DonorController {
 	@Get('/:id')
 	@Authorized("DONOR:GET")
 	@ResponseSchema(ResponseDonor)
-	@ResponseSchema(RunnerNotFoundError, { statusCode: 404 })
-	@OnUndefined(RunnerNotFoundError)
+	@ResponseSchema(DonorNotFoundError, { statusCode: 404 })
+	@OnUndefined(DonorNotFoundError)
 	@OpenAPI({ description: 'Lists all information about the runner whose id got provided.' })
 	async getOne(@Param('id') id: number) {
 		let donor = await this.donorRepository.findOne({ id: id })
-		if (!donor) { throw new RunnerNotFoundError(); }
+		if (!donor) { throw new DonorNotFoundError(); }
 		return new ResponseDonor(donor);
 	}
 
 	@Post()
 	@Authorized("DONOR:CREATE")
 	@ResponseSchema(ResponseDonor)
-	@ResponseSchema(RunnerGroupNeededError)
-	@ResponseSchema(RunnerGroupNotFoundError)
 	@OpenAPI({ description: 'Create a new runner. <br> Please remeber to provide the runner\'s group\'s id.' })
 	async post(@Body({ validate: true }) createRunner: CreateRunner) {
 		let runner;
@@ -67,14 +65,14 @@ export class DonorController {
 	@Put('/:id')
 	@Authorized("DONOR:UPDATE")
 	@ResponseSchema(ResponseDonor)
-	@ResponseSchema(RunnerNotFoundError, { statusCode: 404 })
-	@ResponseSchema(RunnerIdsNotMatchingError, { statusCode: 406 })
+	@ResponseSchema(DonorNotFoundError, { statusCode: 404 })
+	@ResponseSchema(DonorIdsNotMatchingError, { statusCode: 406 })
 	@OpenAPI({ description: "Update the runner whose id you provided. <br> Please remember that ids can't be changed." })
 	async put(@Param('id') id: number, @Body({ validate: true }) runner: UpdateRunner) {
 		let oldRunner = await this.donorRepository.findOne({ id: id }, { relations: ['group'] });
 
 		if (!oldRunner) {
-			throw new RunnerNotFoundError();
+			throw new DonorNotFoundError();
 		}
 
 		if (oldRunner.id != runner.id) {
@@ -97,7 +95,7 @@ export class DonorController {
 		const responseDonor = await this.donorRepository.findOne(donor);
 
 		if (!donor) {
-			throw new RunnerNotFoundError();
+			throw new DonorNotFoundError();
 		}
 
 		//TODO: DELETE DONATIONS AND WARN FOR FORCE
diff --git a/src/errors/DonorErrors.ts b/src/errors/DonorErrors.ts
new file mode 100644
index 0000000..94a844a
--- /dev/null
+++ b/src/errors/DonorErrors.ts
@@ -0,0 +1,25 @@
+import { IsString } from 'class-validator';
+import { NotAcceptableError, NotFoundError } from 'routing-controllers';
+
+/**
+ * Error to throw when a donor couldn't be found.
+ */
+export class DonorNotFoundError extends NotFoundError {
+	@IsString()
+	name = "DonorNotFoundError"
+
+	@IsString()
+	message = "Donor not found!"
+}
+
+/**
+ * Error to throw when two donors' ids don't match.
+ * Usually occurs when a user tries to change a donor's id.
+ */
+export class DonorIdsNotMatchingError extends NotAcceptableError {
+	@IsString()
+	name = "DonorIdsNotMatchingError"
+
+	@IsString()
+	message = "The ids don't match! \n And if you wanted to change a donor's id: This isn't allowed!"
+}
\ No newline at end of file