diff --git a/lib/cli.js b/lib/cli.js
index 91964b3a..8433488c 100644
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -160,7 +160,7 @@ function buildWatcherOptions(options) {
 function guardOutputDir(outputDir, overwrite) {
   if (fs.existsSync(outputDir)) {
     if (overwrite) {
-      if (!canDeleteOutputPath(outputDir)) {
+      if (!isParentDirectory(outputDir)) {
         console.error(
           'option --overwrite can not be used if outputPath is a parent directory: ' + outputDir
         );
@@ -177,7 +177,7 @@ function guardOutputDir(outputDir, overwrite) {
   }
 }
 
-function canDeleteOutputPath(outputPath) {
+function isParentDirectory(outputPath) {
   outputPath = fs.realpathSync(outputPath);
 
   const rootPath = process.cwd();