diff --git a/.travis.yml b/.travis.yml
index bdbda087d..dbaf53dca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,5 +19,6 @@ install:
   - npm ci
   - gulp build
 script:
+  - npm run lint
   - npm test
 after_success: npm run coverage
\ No newline at end of file
diff --git a/packages/core/injector/module-token-factory.ts b/packages/core/injector/module-token-factory.ts
index e99e194db..8f2df4ffc 100644
--- a/packages/core/injector/module-token-factory.ts
+++ b/packages/core/injector/module-token-factory.ts
@@ -2,7 +2,7 @@ import { DynamicModule } from '@nestjs/common';
 import { SHARED_MODULE_METADATA } from '@nestjs/common/constants';
 import { Type } from '@nestjs/common/interfaces/type.interface';
 import * as hash from 'object-hash';
-import safeStringify from 'fast-safe-stringify';
+import stringify from 'fast-safe-stringify';
 
 export class ModuleTokenFactory {
   public create(
@@ -25,7 +25,7 @@ export class ModuleTokenFactory {
   ): string {
     // Uses safeStringify instead of JSON.stringify
     // to support circular dynamic modules
-    return dynamicModuleMetadata ? safeStringify(dynamicModuleMetadata) : '';
+    return dynamicModuleMetadata ? stringify(dynamicModuleMetadata) : '';
   }
 
   public getModuleName(metatype: Type<any>): string {