diff --git a/better_statistics.module b/better_statistics.module
index c4eb989..2a5d83e 100644
--- a/better_statistics.module
+++ b/better_statistics.module
@@ -101,6 +101,7 @@ function better_statistics_ctools_plugin_api_hook_name() {
   return 'statistics_api';
 }
 
+
 /**
  * Implements hook_boot().
  *
@@ -120,8 +121,9 @@ function better_statistics_boot() {
   // Is Drupal page caching enabled.
   $drupal_cache_enabled = variable_get('cache');
 
-  // Is Better Statistics enabled to track cached pages.
-  $bs_cache_logging = variable_get('statistics_access_log_restrictions_cache', TRUE);
+  // Is Better Statistics enabled to track cache status.
+  $active_fields = variable_get('better_statistics_fields', better_statistics_get_default_fields());
+  $bs_cache_logging = isset($active_fields['cache']);
 
   // Set a cookie with cache status retrieved from the headers.
   if ($drupal_cache_enabled && $bs_cache_logging) {
@@ -138,6 +140,7 @@ function better_statistics_boot() {
   }
 }
 
+
 /**
  * Implements hook_exit().
  *
diff --git a/js/fields/custom.js b/js/fields/custom.js
index f2a4bb0..993d5c1 100644
--- a/js/fields/custom.js
+++ b/js/fields/custom.js
@@ -14,7 +14,7 @@ document.addEventListener('statistics.accesslog', function(event) {
   // Cache Status.
   var cacheStatus = getCookie('Drupal.cache.status');
   if (cacheStatus == 'void' || cacheStatus == null) {
-    event.data.cache = '';
+    event.data.cache = 'NULL';
   }
   else {
     event.data.cache = cacheStatus;