diff --git a/packages/babel-plugin-minify-mangle-names/src/index.js b/packages/babel-plugin-minify-mangle-names/src/index.js
index 5be2bb2a4..a2d1cc999 100644
--- a/packages/babel-plugin-minify-mangle-names/src/index.js
+++ b/packages/babel-plugin-minify-mangle-names/src/index.js
@@ -1,4 +1,4 @@
-module.exports = ({ types: t }) => {
+module.exports = ({ types: t, traverse }) => {
   const hop = Object.prototype.hasOwnProperty;
 
   class Mangler {
@@ -24,11 +24,17 @@ module.exports = ({ types: t }) => {
     }
 
     run() {
+      this.cleanup();
       this.collect();
       this.charset.sort();
       this.mangle();
     }
 
+    cleanup() {
+      traverse.clearCache();
+      this.program.scope.crawl();
+    }
+
     isBlacklist(name) {
       return hop.call(this.blacklist, name);
     }