diff --git a/tests/shuffle/basic_shuffle.py b/tests/shuffle/basic_shuffle.py
index 836a2a78a220f1d2d6861f229ac12ce8208ac601..3272be2739ab33eeb1780c7246b20bc5b25f926b 100644
--- a/tests/shuffle/basic_shuffle.py
+++ b/tests/shuffle/basic_shuffle.py
@@ -147,6 +147,7 @@ def basic_shuffle_2(conductor: ClusterConductor, dir, log: Logger):
             assert not (key in keys1)
         
         assert original_get_all.keys() == keys1 + keys2
+        assert len(original_get_all) == len(keys1) + len(keys2)
 
         return True, "ok"