diff --git a/challenge/README.md b/challenge/README.md
index 6c78a32..4f870e0 100644
--- a/challenge/README.md
+++ b/challenge/README.md
@@ -310,7 +310,8 @@ Please refresh the page, click `Login with Hugging Face` at the bottom of the le
 
 ### If I encounter a reshape error, what should I do?
 
-You should first refer to this [location](https://github.com/OpenDriveLab/DriveLM/blob/main/challenge/evaluation.py#L90). Most of the reshape errors occur here.
+You should first refer to this [location](https://github.com/OpenDriveLab/DriveLM/blob/main/challenge/evaluation.py#L89). Most of the reshape errors occur here.
+
 
 ### Finally, which dataset do we submit to the competition?
 
diff --git a/challenge/evaluation.py b/challenge/evaluation.py
index d072275..afd646d 100644
--- a/challenge/evaluation.py
+++ b/challenge/evaluation.py
@@ -84,6 +84,8 @@ def match_result(self, answer, GT):
         answer_nums = re.findall(r'\d+\.\d+', answer)
         GT_nums = re.findall(r'\d+\.\d+', GT)
         # transform string into float
+        if len(answer_nums) % 2 != 0:
+            answer_nums = answer_nums[:-1]
         answer_nums = np.array([list(map(float, x.split()))[0] for x in answer_nums]).reshape(-1, 2)
         GT_nums = np.array([list(map(float, x.split()))[0] for x in GT_nums]).reshape(-1, 2)
         length = len(GT_nums)