diff --git a/learnware/market/heterogeneous_feature.py b/learnware/market/heterogeneous_feature.py
index 5a6b105..f9dd094 100644
--- a/learnware/market/heterogeneous_feature.py
+++ b/learnware/market/heterogeneous_feature.py
@@ -15,7 +15,7 @@ class HeterogeneousFeatureMarket(EvolvedMarket):
     """
 
     def __init__(self):
-        super(EvolvedMarket, self).__init__()
+        super(HeterogeneousFeatureMarket, self).__init__()
 
     def learn_mapping_functions(self, learnware_list: List[Learnware]):
         """Use all statistical specifications of submitted learnwares to generate mapping functions from each original feature space to subsapce and vice verse.