diff --git a/core/components/seopro/elements/plugins/seopro.plugin.php b/core/components/seopro/elements/plugins/seopro.plugin.php
index c9e79ea..a65bfed 100644
--- a/core/components/seopro/elements/plugins/seopro.plugin.php
+++ b/core/components/seopro/elements/plugins/seopro.plugin.php
@@ -153,7 +153,7 @@
         break;
 
     case 'OnLoadWebDocument':
-        if ($modx->context->get('key') == "mgr") {
+        if ($modx->context->get('key') == "mgr" || !is_object($modx->resource)) {
             break;
         }
         $template = ($modx->resource->get('template')) ? (string)$modx->resource->get('template') : '';
@@ -190,4 +190,4 @@
         }
         $modx->setPlaceholder('seoPro.title', $title);
         break;
-}
\ No newline at end of file
+}