diff --git a/tests/pairlist/test_pairlist.py b/tests/pairlist/test_pairlist.py
index 929d87779..3a8f94974 100644
--- a/tests/pairlist/test_pairlist.py
+++ b/tests/pairlist/test_pairlist.py
@@ -243,6 +243,9 @@ def test_VolumePairList_whitelist_gen(mocker, whitelist_conf, shitcoinmarkets, t
     freqtrade.pairlists.refresh_pairlist()
     whitelist = freqtrade.pairlists.whitelist
 
+    assert isinstance(whitelist, list)
+    
+    # Verify length of pairlist matches (used for ShuffleFilter without seed)
     if type(whitelist_result) is list:
         assert whitelist == whitelist_result
     else: