diff --git a/lib/6to5/traversal/scope.js b/lib/6to5/traversal/scope.js
index 73df51e376..af676612d5 100644
--- a/lib/6to5/traversal/scope.js
+++ b/lib/6to5/traversal/scope.js
@@ -195,7 +195,7 @@ Scope.prototype.register = function (node, reference, kind) {
   for (var key in ids) {
     var id = ids[key];
 
-    this.checkBlockScopedCollisions(key, id);
+    if (kind !== "hoisted") this.checkBlockScopedCollisions(key, id);
 
     this.registerType(key, id, node);
     this.bindings[key] = id;