1 files changed, 1 insertions, 1 deletions
diff --git a/src/mirror-delay.js b/src/mirror-delay.js
index c4ab7b8e..cde55343 100644
--- a/src/mirror-delay.js
+++ b/src/mirror-delay.js
@@ -764,7 +764,7 @@ ObjectMirror.prototype.referencedBy = function(opt_max_objects) {
 ObjectMirror.prototype.toText = function() {
   var name;
   var ctor = this.constructorFunction();
-  if (ctor.isUndefined()) {
+  if (!ctor.isFunction()) {
     name = this.className();
   } else {
     name = ctor.name();