diff --git a/packages/logger/src/define-package.ts b/packages/logger/src/define-package.ts
index 877674f..54d133b 100644
--- a/packages/logger/src/define-package.ts
+++ b/packages/logger/src/define-package.ts
@@ -8,6 +8,7 @@ const logger = createLogger('logger');
 setTimeout(() => {
   if ('registeredList' in Alwatr) {
     logger.accident?.('define-package', 'duplicate_old_package_defined', Alwatr.registeredList);
+    throw new Error('duplicate_old_package_defined');
   }
 }, 2000);
 
@@ -15,7 +16,7 @@ export const definePackage = (packageName: string, version: string) => {
   logger.logMethodArgs?.('define-package', {packageName, version});
 
   if (packageName in Alwatr.packages) {
-    logger.error('define-package', 'duplicate_package_defined', {
+    logger.accident('define-package', 'duplicate_package_defined', {
       packageName,
       new: version,
       old: Alwatr.packages[packageName],
@@ -24,7 +25,7 @@ export const definePackage = (packageName: string, version: string) => {
   }
 
   if (packageName.indexOf('@alwatr') === -1) {
-    logger.error('define-package', 'package_name_starts_with_alwatr_scope', {
+    logger.accident('define-package', 'package_name_starts_with_alwatr_scope', {
       packageName,
     });
     throw new Error('package_name_starts_with_alwatr_scope');