1 files changed, 1 insertions, 1 deletions

diff --git a/src/Wallabag/CoreBundle/Helper/TagsAssigner.php b/src/Wallabag/CoreBundle/Helper/TagsAssigner.php
index a2fb0b9a..0bfe5c57 100644
--- a/src/Wallabag/CoreBundle/Helper/TagsAssigner.php
+++ b/src/Wallabag/CoreBundle/Helper/TagsAssigner.php
@@ -45,7 +45,7 @@ class TagsAssigner
         }
 
         foreach ($tags as $label) {
-            $label = trim($label);
+            $label = trim(mb_convert_case($label, MB_CASE_LOWER));
 
             // avoid empty tag
             if (0 === strlen($label)) {