diff --git a/kombu/common.py b/kombu/common.py
index df882708..a147cf0d 100644
--- a/kombu/common.py
+++ b/kombu/common.py
@@ -99,10 +99,9 @@ def _maybe_declare(entity):
         ident = hash(entity)
         if ident not in declared:
             entity.declare()
-            declared.add(entity)
+            declared.add(hash(entity))
             return True
         return False
-
     entity.declare()
     return True
 
diff --git a/kombu/tests/test_common.py b/kombu/tests/test_common.py
index 7cd1d8b0..1f918297 100644
--- a/kombu/tests/test_common.py
+++ b/kombu/tests/test_common.py
@@ -80,7 +80,7 @@ class test_maybe_declare(Case):
 
         maybe_declare(entity, channel)
         self.assertEqual(entity.declare.call_count, 1)
-        self.assertIn(entity, channel.connection.client.declared_entities)
+        self.assertIn(hash(entity), channel.connection.client.declared_entities)
 
         maybe_declare(entity, channel)
         self.assertEqual(entity.declare.call_count, 1)