--- context_ui/context_ui.module	2010-08-18 11:21:06.421413648 +0300
+++ context_ui/context_ui.module-patched	2010-08-18 11:48:39.701406568 +0300
@@ -210,11 +210,15 @@ function context_ui_form_block_admin_con
             'fragment' => 'context-ui-blocks',
             'query' => 'destination='. $_GET['q'],
           );
-          if ($context->system) {
-            $row[] = l(t('Override visibility'), "admin/build/context/$identifier/clone", $options);
-          }
-          else {
-            $row[] = l(t('Edit visibility'), "admin/build/context/{$context->cid}", $options);
+          switch ($context->type) {
+            case CONTEXT_STORAGE_DEFAULT:
+              $row[] = l(t('Override visibility'), "admin/build/context/$identifier/clone", $options);
+              break;
+            case CONTEXT_STORAGE_OVERRIDDEN:
+              $row[] = l(t('Edit visibility'), "admin/build/context/{$context->cid}", $options);
+              break;
+            case CONTEXT_STORAGE_NORMAL:
+              $row[] = l(t('Edit visibility'), "admin/build/context/{$context->cid}", $options);
           }
           $rows[] = $row;
         }