diff --git a/index.js b/index.js
index 7367e97..4eba5f5 100644
--- a/index.js
+++ b/index.js
@@ -39,7 +39,7 @@ module.exports = function f (b, opts) {
           hasExports: true
         });
 
-    b.on('reset', addHooks);
+    b.once('reset', addHooks);
     addHooks();
 
     function addHooks () {