diff --git a/src/caosdb/common/models.py b/src/caosdb/common/models.py
index 122fa1db0f88df6dcb014b4dcba206ca5c0f6efa..a509842a41af3868b59ee76e55ccd2981f533bca 100644
--- a/src/caosdb/common/models.py
+++ b/src/caosdb/common/models.py
@@ -1322,7 +1322,7 @@ class Message(object):
 
     def __eq__(self, obj):
         if isinstance(obj, Message):
-            return self.type == obj.type and self.code == obj.codes
+            return self.type == obj.type and self.code == obj.code
 
         return False