diff --git a/convlab2/policy/evaluate.py b/convlab2/policy/evaluate.py
index 8085bf40d140bca2dcaf6af9a15b49ebdcee21ff..de0a06fa24aa598205fc4b98d3118f81feb9db09 100755
--- a/convlab2/policy/evaluate.py
+++ b/convlab2/policy/evaluate.py
@@ -222,8 +222,7 @@ def evaluate(dataset_name, model_name, load_path, calculate_reward=True):
             for key in sess.evaluator.goal: 
                 if key not in task_success: 
                     task_success[key] = []
-                else: 
-                    task_success[key].append(task_succ)
+                task_success[key].append(task_succ)
             task_success['All'].append(task_succ)
         
         for key in task_success: