diff --git a/demo_api/dual_bert/api.py b/demo_api/dual_bert/api.py
index 67ea036..2a0d1be 100644
--- a/demo_api/dual_bert/api.py
+++ b/demo_api/dual_bert/api.py
@@ -36,7 +36,7 @@ def predict():
     outputs = postprocessor(model_output, model_inputs["stance_label_mask"])
 
 
-    return {"rumor_label": outputs["rumor_labels"][0],
+    return {"rumor_labels": outputs["rumor_labels"][0],
             "stance_labels": outputs["stance_labels"][0],
             "text": examples[0]}
 
diff --git a/sgnlp/models/dual_bert/postprocess.py b/sgnlp/models/dual_bert/postprocess.py
index c8a4033..8cb213c 100644
--- a/sgnlp/models/dual_bert/postprocess.py
+++ b/sgnlp/models/dual_bert/postprocess.py
@@ -6,17 +6,17 @@
 
 
 class DualBertPostprocessor:
-    def __init__(self, rumour_labels=["False Rumor", "True Rumor", "Unverified Rumor"],
-                 stance_labels=["PAD", "Deny", "Support", "Query", "Comment"]):
-        self.rumor_labels = rumour_labels
-        self.stance_labels = stance_labels
+    def __init__(self, rumour_labels_list=["False Rumor", "True Rumor", "Unverified Rumor"],
+                 stance_labels_list=["PAD", "Deny", "Support", "Query", "Comment"]):
+        self.rumor_labels_list = rumour_labels_list
+        self.stance_labels_list = stance_labels_list
 
     def __call__(self, model_outputs: [DualBertModelOutput], stance_label_mask):
 
         rumor_labels = []
         for rumor_logits in model_outputs.rumour_logits:
             rumour_label_idx = np.argmax(rumor_logits.detach().cpu().numpy())
-            rumor_labels.append(self.rumor_labels[rumour_label_idx])
+            rumor_labels.append(self.rumor_labels_list[rumour_label_idx])
 
         stance_labels = []
         stance_label_idx = torch.argmax(F.log_softmax(model_outputs.stance_logits, dim=2), dim=2)
@@ -25,7 +25,7 @@ def __call__(self, model_outputs: [DualBertModelOutput], stance_label_mask):
             temp_2 = []
             for j, m in enumerate(mask):
                 if m:
-                    temp_2.append(self.stance_labels[stance_label_idx[i][j]])
+                    temp_2.append(self.stance_labels_list[stance_label_idx[i][j]])
                 else:
                     break
             stance_labels.append(temp_2[1:])  # first post should not have a stance label