diff --git a/lib/migrate.js b/lib/migrate.js
index 6a3db45a3cb..cff1904a329 100644
--- a/lib/migrate.js
+++ b/lib/migrate.js
@@ -74,7 +74,8 @@ module.exports = function transformFile(currentConfigPath, outputConfigPath, opt
 								throw err;
 							}
 							else if (webpackOptionsValidationErrors.length) {
-								throw new WebpackOptionsValidationError(webpackOptionsValidationErrors);
+								const validationMsg = new WebpackOptionsValidationError(webpackOptionsValidationErrors);
+								throw validationMsg.message;
 							} else {
 								console.log(chalk.green(`\n ✔︎ New webpack v2 config file is at ${outputConfigPath}`));
 							}