diff --git a/src/Common/FileSystem.ts b/src/Common/FileSystem.ts
index da1832d34..392052888 100644
--- a/src/Common/FileSystem.ts
+++ b/src/Common/FileSystem.ts
@@ -1,7 +1,6 @@
 import { ArraybufferUtils } from "./binary/ArraybufferUtils";
 import { Base64Utils } from './binary/Base64Utils';
 import { BufferUtils } from "./binary/BufferUtils";
-import { Sleep } from "./Sleep";
 
 /**
  * FileSystem is used to read and write files using nunuStudio.