diff --git a/packages/babel-traverse/src/scope/binding.js b/packages/babel-traverse/src/scope/binding.js
index 04e9a14eda..32cfe54b99 100644
--- a/packages/babel-traverse/src/scope/binding.js
+++ b/packages/babel-traverse/src/scope/binding.js
@@ -82,6 +82,9 @@ export default class Binding {
    */
 
   reference(path: NodePath) {
+    if (this.referencePaths.indexOf(path) !== -1) {
+      return;
+    }
     this.referenced = true;
     this.references++;
     this.referencePaths.push(path);