diff --git a/modules/authcache_enum/authcache_enum.module b/modules/authcache_enum/authcache_enum.module
index 7062c16..f760cc2 100644
--- a/modules/authcache_enum/authcache_enum.module
+++ b/modules/authcache_enum/authcache_enum.module
@@ -113,7 +113,7 @@ function authcache_enum_user_keys() {
 function authcache_enum_anonymous_keys() {
   $anonymous_keys = &drupal_static(__FUNCTION__);
 
-  if (!isset($info)) {
+  if (!isset($anonymous_keys)) {
     $anonymous_keys = module_invoke_all('authcache_enum_anonymous_keys');
     drupal_alter('authcache_enum_anonymous_keys', $anonymous_keys);
   }