diff --git a/applications/ColossalChat/coati/distributed/reward/reward_fn.py b/applications/ColossalChat/coati/distributed/reward/reward_fn.py
index 6844d700a..14d340dc4 100644
--- a/applications/ColossalChat/coati/distributed/reward/reward_fn.py
+++ b/applications/ColossalChat/coati/distributed/reward/reward_fn.py
@@ -1,5 +1,4 @@
 import torch
-from math_verify import parse, verify
 
 from .reward_utils import extract_boxed_solution, extract_solution, validate_response_structure
 
@@ -36,7 +35,11 @@ def math_reward_fn(input_ids, gt_answer, response_idx, **kwargs):
         format_acc += 1
 
     # Check answer accuracy, answer is considered correct if the answer is correct and the format is valid
-    if format_valid and final_answer is not None and verify(parse(gt_answer.strip()), parse(final_answer.strip())):
+    if (
+        format_valid
+        and final_answer is not None
+        and gt_answer.strip().replace(" ", "").lower() == final_answer.strip().replace(" ", "").lower()
+    ):
         ans_acc += 1
         reward += acc_score
 
@@ -88,7 +91,7 @@ def boxed_math_reward_fn(input_ids, gt_answer, response_idx, **kwargs):
         reward += format_score
 
     # Check answer accuracy, answer is considered correct if the answer is correct and the format is valid
-    if format_valid and final_answer is not None and verify(parse(gt_answer.strip()), parse(final_answer.strip())):
+    if format_valid and final_answer is not None and gt_answer.strip().lower() == final_answer.strip().lower():
         ans_acc += 1
         reward += acc_score