diff --git a/view/common/header.maron b/view/common/header.maron
index 5927e80..5a51afa 100644
--- a/view/common/header.maron
+++ b/view/common/header.maron
@@ -15,7 +15,7 @@
 {@ if (isset($meta->author)) @}
   <meta name="author" content="{{ $meta->author }}" />
 {@ endif @}
-{@ if (sset($meta->thumbnail) && !empty($meta->thumbnail)) @}
+{@ if (isset($meta->thumbnail) && !empty($meta->thumbnail)) @}
   <meta name="thumbnail" content="/static/{{ $meta->thumbnail }}" />
 {@ endif @}
 {@ endif @}