diff --git a/src/routes/validate.ts b/src/routes/validate.ts
index bce43764..7686db50 100644
--- a/src/routes/validate.ts
+++ b/src/routes/validate.ts
@@ -98,8 +98,8 @@ export const registerValidationRoutes = (app: Express) => {
       //0.5 Check input
       if (!body.spec) {
         throw new RapLPBaseApiError(
-          'Invalid request',
-          'Missing required field: spec',
+          'Ogiltig request',
+          'Obligatoriskt fält saknas: spec',
           ERROR_TYPE.BAD_REQUEST,
           );
       }
@@ -129,9 +129,9 @@ export const registerValidationRoutes = (app: Express) => {
          return res.status(400).json(
             new ProblemDetailsDTO({
               type: 'https://rap-lp./problems/semantic-validation',
-              title: 'Rule validation failed',
+              title: 'Regelvalideringen misslyckades',
               status: 400,
-              detail: 'The specification contains structural or semantic errors',
+              detail: 'Specifikationen innehåller strukturella eller semantiska fel',
               instance: req.originalUrl,
 
               // Put in kind field to indicate violation
@@ -157,9 +157,9 @@ export const registerValidationRoutes = (app: Express) => {
          return res.status(400).json(
             new ProblemDetailsDTO({
               type: 'https://rap-lp./problems/rule-validation',
-              title: 'Rule validation failed',
+              title: 'Regelvalideringen misslyckades',
               status: 400,
-              detail: 'The api specification violates one or more rules according to the Swedish REST API-profile',
+              detail: 'API-specifikationen bryter mot en eller flera regler enligt den svenska REST API-profilen.',
               instance: req.originalUrl,
 
               // Put in kind field to indicate violation
diff --git a/src/util/RapLPBaseApiErrorHandling.ts b/src/util/RapLPBaseApiErrorHandling.ts
index 5f5e4fba..eb9c1f07 100644
--- a/src/util/RapLPBaseApiErrorHandling.ts
+++ b/src/util/RapLPBaseApiErrorHandling.ts
@@ -34,7 +34,7 @@ const errorHandler = (err: any, req: Request, res: Response, next: NextFunction)
 if (err instanceof SpecParseError) {
     const problemDetails = new ProblemDetailsDTO({
       type: 'https://rap-lp./problems/spec-parse-error',
-      title: 'Specification parse error',
+      title: 'Okänt fel vid parsning av API-specifikationen',
       status: ERROR_TYPE.BAD_REQUEST,
       detail: err.message,
       instance: req.originalUrl,