diff --git a/gajim/common/modules/__init__.py b/gajim/common/modules/__init__.py
index 92f084d3d..4514dbbda 100644
--- a/gajim/common/modules/__init__.py
+++ b/gajim/common/modules/__init__.py
@@ -53,6 +53,9 @@ class ModuleMock:
         self.blocked_groups = []
         self.blocked_all = False
 
+        # Bookmarks
+        self.bookmarks = {}
+
     def __getattr__(self, key):
         def _mock(self, *args, **kwargs):
             return