diff --git a/lib/packageModules.js b/lib/packageModules.js
index 422ffbcb89..fce5493e69 100644
--- a/lib/packageModules.js
+++ b/lib/packageModules.js
@@ -143,7 +143,7 @@ function zip(directory, zipFileName) {
   const artifactFilePath = path.join(this.webpackOutputPath, zipFileName);
   this.serverless.utils.writeFileDir(artifactFilePath);
 
-  return serverlessZip({
+  return serverlessZip.call(this, {
     directory,
     artifactFilePath,
     files