diff --git a/src/interceptors/interceptor.js b/src/interceptors/interceptor.js
index a16b8ab..d934566 100644
--- a/src/interceptors/interceptor.js
+++ b/src/interceptors/interceptor.js
@@ -12,8 +12,8 @@ const interceptor = (instance) => {
     (config) => {
       const token = tokenService.getAccessToken()
       if (token) {
-        config.headers{ Authorization: `Bearer ${token}` } // for Spring Boot back-end
-        config.headers['x-access-token'] = token // for Node.js Express back-end
+        config['headers'] = { Authorization: `Bearer ${token}` } // for Spring Boot back-end
+        config['headers'] = { 'x-access-token': token } // for Node.js Express back-end
       }
       return config
     },