diff --git a/packages/fastify/src/fastify.module.ts b/packages/fastify/src/fastify.module.ts
index ccb1a36..cec6fbf 100644
--- a/packages/fastify/src/fastify.module.ts
+++ b/packages/fastify/src/fastify.module.ts
@@ -27,7 +27,7 @@ export class FastifyModule {
             return pipe(
               addSchema(schemas),
               globalErrorHandler(options.globalErrorHandler),
-              addMiddlewares(options.middlewares)
+              addMiddlewares(options.middlewares || [])
             )(instance);
           },
         },
diff --git a/packages/fastify/src/helpers/hooks/add-middlewares.ts b/packages/fastify/src/helpers/hooks/add-middlewares.ts
index e417775..c5bbfa0 100644
--- a/packages/fastify/src/helpers/hooks/add-middlewares.ts
+++ b/packages/fastify/src/helpers/hooks/add-middlewares.ts
@@ -4,7 +4,7 @@ import { FastifyInstance } from 'fastify';
 export type Middleware = (instance: FastifyInstance) => FastifyInstance;
 
 export function addMiddlewares(
-  middlewares: Middleware[]
+  middlewares: Middleware[] = []
 ): Reader<FastifyInstance, FastifyInstance> {
   return (instance) => {
     for (const middleware of middlewares) {