diff --git a/src/controllers/AuthController.ts b/src/controllers/AuthController.ts
index eebbd79..be55ee7 100644
--- a/src/controllers/AuthController.ts
+++ b/src/controllers/AuthController.ts
@@ -87,7 +87,7 @@ export class AuthController {
 	@ResponseSchema(UserNotFoundError, { statusCode: 404 })
 	@ResponseSchema(UsernameOrEmailNeededError, { statusCode: 406 })
 	@ResponseSchema(MailSendingError, { statusCode: 500 })
-	@OpenAPI({ description: "Request a password reset token. <br> This will provide you with a reset token that you can use by posting to /api/auth/reset/{token}." })
+	@OpenAPI({ description: "Request a password reset token. <br> This will provide you with a reset token that you can use by posting to /api/auth/reset/{token}.", parameters: [{ in: "query", name: "locale", schema: { type: "string", enum: ["de", "en"] } }] })
 	async getResetToken(@Body({ validate: true }) passwordReset: CreateResetToken, @QueryParam("locale") locale: string = "en") {
 		const reset_token: string = await passwordReset.toResetToken();
 		await Mailer.sendResetMail(passwordReset.email, reset_token, locale);
diff --git a/src/controllers/RunnerSelfServiceController.ts b/src/controllers/RunnerSelfServiceController.ts
index 8f5509e..d8b96df 100644
--- a/src/controllers/RunnerSelfServiceController.ts
+++ b/src/controllers/RunnerSelfServiceController.ts
@@ -119,8 +119,8 @@ export class RunnerSelfServiceController {
 	@Post('/runners/forgot')
 	@ResponseSchema(RunnerNotFoundError, { statusCode: 404 })
 	@OnUndefined(ResponseEmpty)
-	@OpenAPI({ description: 'Use this endpoint to reuqest a new selfservice token/link to be sent to your mail address (rate limited to one mail every 24hrs).' })
-	async requestNewToken(@QueryParam('mail') mail: string) {
+	@OpenAPI({ description: 'Use this endpoint to reuqest a new selfservice token/link to be sent to your mail address (rate limited to one mail every 24hrs).', parameters: [{ in: "query", name: "locale", schema: { type: "string", enum: ["de", "en"] } }] })
+	async requestNewToken(@QueryParam('mail') mail: string, @QueryParam("locale") locale: string = "en") {
 		if (!mail) {
 			throw new RunnerNotFoundError();
 		}
@@ -131,7 +131,7 @@ export class RunnerSelfServiceController {
 		const token = JwtCreator.createSelfService(runner);
 
 		try {
-			await Mailer.sendSelfserviceForgottenMail(runner.email, token, "en")
+			await Mailer.sendSelfserviceForgottenMail(runner.email, token, locale)
 		} catch (error) {
 			throw new MailSendingError();
 		}
@@ -145,8 +145,8 @@ export class RunnerSelfServiceController {
 	@Post('/runners/register')
 	@ResponseSchema(ResponseSelfServiceRunner)
 	@ResponseSchema(RunnerEmailNeededError, { statusCode: 406 })
-	@OpenAPI({ description: 'Create a new selfservice runner in the citizen org. <br> This endpoint shoud be used to allow "everyday citizen" to register themselves. <br> You have to provide a mail address, b/c the future we\'ll implement email verification.' })
-	async registerRunner(@Body({ validate: true }) createRunner: CreateSelfServiceCitizenRunner) {
+	@OpenAPI({ description: 'Create a new selfservice runner in the citizen org. <br> This endpoint shoud be used to allow "everyday citizen" to register themselves. <br> You have to provide a mail address, b/c the future we\'ll implement email verification.', parameters: [{ in: "query", name: "locale", schema: { type: "string", enum: ["de", "en"] } }] })
+	async registerRunner(@Body({ validate: true }) createRunner: CreateSelfServiceCitizenRunner, @QueryParam("locale") locale: string = "en") {
 		let runner = await createRunner.toEntity();
 
 		runner = await this.runnerRepository.save(runner);
@@ -154,7 +154,7 @@ export class RunnerSelfServiceController {
 		response.token = JwtCreator.createSelfService(runner);
 
 		try {
-			await Mailer.sendSelfserviceWelcomeMail(runner.email, response.token, "en")
+			await Mailer.sendSelfserviceWelcomeMail(runner.email, response.token, locale)
 		} catch (error) {
 			throw new MailSendingError();
 		}
@@ -165,8 +165,8 @@ export class RunnerSelfServiceController {
 	@Post('/runners/register/:token')
 	@ResponseSchema(ResponseSelfServiceRunner)
 	@ResponseSchema(RunnerOrganizationNotFoundError, { statusCode: 404 })
-	@OpenAPI({ description: 'Create a new selfservice runner in a provided org. <br> The orgs get provided and authorized via api tokens that can be optained via the /organizations endpoint.' })
-	async registerOrganizationRunner(@Param('token') token: string, @Body({ validate: true }) createRunner: CreateSelfServiceRunner) {
+	@OpenAPI({ description: 'Create a new selfservice runner in a provided org. <br> The orgs get provided and authorized via api tokens that can be optained via the /organizations endpoint.', parameters: [{ in: "query", name: "locale", schema: { type: "string", enum: ["de", "en"] } }] })
+	async registerOrganizationRunner(@Param('token') token: string, @Body({ validate: true }) createRunner: CreateSelfServiceRunner, @QueryParam("locale") locale: string = "en") {
 		const org = await this.getOrgansisation(token);
 
 		let runner = await createRunner.toEntity(org);
@@ -176,7 +176,7 @@ export class RunnerSelfServiceController {
 		response.token = JwtCreator.createSelfService(runner);
 
 		try {
-			await Mailer.sendSelfserviceWelcomeMail(runner.email, response.token, "en")
+			await Mailer.sendSelfserviceWelcomeMail(runner.email, response.token, locale)
 		} catch (error) {
 			throw new MailSendingError();
 		}