diff --git a/fastify.d.ts b/fastify.d.ts
index 787d9326fb..759090cd9a 100644
--- a/fastify.d.ts
+++ b/fastify.d.ts
@@ -183,7 +183,7 @@ type TrustProxyFunction = (address: string, hop: number) => boolean
 declare module '@fastify/error' {
   interface FastifyError {
     validation?: ValidationResult[];
-    validationContext?: "body" | "headers" | "parameters" | "querystring";
+    validationContext?: 'body' | 'headers' | 'parameters' | 'querystring';
   }
 }
 
diff --git a/test/types/fastify.test-d.ts b/test/types/fastify.test-d.ts
index f44164bd9f..eac0a77e4d 100644
--- a/test/types/fastify.test-d.ts
+++ b/test/types/fastify.test-d.ts
@@ -236,8 +236,11 @@ const ajvErrorObject: AjvErrorObject = {
 }
 expectAssignable<ValidationResult>(ajvErrorObject)
 
-expectAssignable<FastifyError["validation"]>([ajvErrorObject])
-expectAssignable<FastifyError["validationContext"]>("body")
+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)