diff --git a/bukuserver/views.py b/bukuserver/views.py
index 9f113d9..736aca4 100644
--- a/bukuserver/views.py
+++ b/bukuserver/views.py
@@ -314,7 +314,7 @@ class BookmarkModelView(BaseModelView):
             def tags_not_contain_func(query, value, index):
                 for item in query:
                     for tag in item[index].split(','):
-                        if tag and tag == value:
+                        if tag and tag != value:
                             yield item
 
             res.extend([