diff --git a/alpha/template.php b/alpha/template.php
index 2e94310..c22ce43 100644
--- a/alpha/template.php
+++ b/alpha/template.php
@@ -334,7 +334,7 @@ function alpha_alpha_preprocess_html(&$vars) {
     }
   }
   
-  if (($theme->settings['debug']['grid'] || $theme->settings['debug']['block']) && $theme->settings['debug']['access']) {
+  if (($theme->settings['debug']['grid'] || $theme->settings['debug']['block']) && isset($theme->settings['debug']['access']) && $theme->settings['debug']['access']) {
     if ($theme->settings['debug']['grid'] && $theme->settings['debug']['grid_active']) {
       $vars['attributes_array']['class'][] = 'alpha-grid-debug';
     }