diff --git a/lib/pipeline/pipeline.js b/lib/pipeline/pipeline.js
index 361aba0f..1f0a742b 100644
--- a/lib/pipeline/pipeline.js
+++ b/lib/pipeline/pipeline.js
@@ -122,7 +122,7 @@ class Pipeline {
               return obj;
             }, {}),
           function (files, targetFile, cb) {
-            const isDir = targetFile.slice(-1) === '/' || targetFile.indexOf('.') === -1;
+            const isDir = targetFile.slice(-1) === '/' || targetFile.slice(-1) === '\\' || targetFile.indexOf('.') === -1;
             // if it's not a directory
             if (!isDir) {
               self.logger.info(__("writing file") + " " + (utils.joinPath(self.buildDir, targetFile)).bold.dim);