diff --git a/module/VuFind/src/VuFind/Db/Table/Tags.php b/module/VuFind/src/VuFind/Db/Table/Tags.php
index c9c7ec672c06237303f8275d188d95b63807d708..a7fb22ccf7783eaddb19baa53d9df60e4afde01d 100644
--- a/module/VuFind/src/VuFind/Db/Table/Tags.php
+++ b/module/VuFind/src/VuFind/Db/Table/Tags.php
@@ -312,7 +312,7 @@ class Tags extends Gateway
                     'ur.list_id', 'rt.list_id',
                     Predicate::TYPE_IDENTIFIER, Predicate::TYPE_IDENTIFIER
                 );
-            
+
             if (null !== $source) {
                 $select->where->equalTo('r.source', $source);
             }