diff --git a/scripts/mergeLessPlugin.js b/scripts/mergeLessPlugin.js
index 2a7accdc7fd4f0f2231ddb1fdd3b97f754d340a6..2e27f372b7f3f8a9b809fb1d1f9c6aa8d8417c5f 100755
--- a/scripts/mergeLessPlugin.js
+++ b/scripts/mergeLessPlugin.js
@@ -59,7 +59,7 @@ class mergeLessPlugin {
       // covert less
       if (fs.existsSync(outFile)) {
         fs.unlinkSync(outFile);
-      } else {
+      } else if (!fs.existsSync(path.dirname(outFile))) {
         fs.mkdirSync(path.dirname(outFile));
       }
       loopAllLess(options.stylesDir).then(() => {