diff --git a/fastify.d.ts b/fastify.d.ts
index aa0cc012d2..759090cd9a 100644
--- a/fastify.d.ts
+++ b/fastify.d.ts
@@ -183,6 +183,7 @@ type TrustProxyFunction = (address: string, hop: number) => boolean
 declare module '@fastify/error' {
   interface FastifyError {
     validation?: ValidationResult[];
+    validationContext?: 'body' | 'headers' | 'parameters' | 'querystring';
   }
 }
 
diff --git a/test/types/fastify.test-d.ts b/test/types/fastify.test-d.ts
index 63f65360c6..eac0a77e4d 100644
--- a/test/types/fastify.test-d.ts
+++ b/test/types/fastify.test-d.ts
@@ -10,7 +10,8 @@ import fastify, {
   InjectOptions, FastifyBaseLogger,
   RouteGenericInterface,
   ValidationResult,
-  FastifyErrorCodes
+  FastifyErrorCodes,
+  FastifyError
 } from '../../fastify'
 import { ErrorObject as AjvErrorObject } from 'ajv'
 import * as http from 'http'
@@ -235,6 +236,12 @@ const ajvErrorObject: AjvErrorObject = {
 }
 expectAssignable<ValidationResult>(ajvErrorObject)
 
+expectAssignable<FastifyError['validation']>([ajvErrorObject])
+expectAssignable<FastifyError['validationContext']>('body')
+expectAssignable<FastifyError['validationContext']>('headers')
+expectAssignable<FastifyError['validationContext']>('parameters')
+expectAssignable<FastifyError['validationContext']>('querystring')
+
 const routeGeneric: RouteGenericInterface = {}
 expectType<unknown>(routeGeneric.Body)
 expectType<unknown>(routeGeneric.Headers)