diff --git a/src/Controllers/TagController.php b/src/Controllers/TagController.php
index b9216b01..40290ee7 100644
--- a/src/Controllers/TagController.php
+++ b/src/Controllers/TagController.php
@@ -126,7 +126,8 @@ class TagController
 			if (!$suppliedQuery)
 				$suppliedQuery = ' ';
 			$suppliedTag = InputHelper::get('tag');
-			$suppliedTag = Model_Tag::validateTag($suppliedTag);
+			if (!empty($suppliedTag))
+				$suppliedTag = Model_Tag::validateTag($suppliedTag);
 			\Chibi\UrlHelper::forward(\Chibi\UrlHelper::route('post', 'list', ['source' => 'mass-tag', 'query' => $suppliedQuery, 'additionalInfo' => $suppliedTag]));
 		}
 	}