diff --git a/desktop_env/evaluators/metrics/general.py b/desktop_env/evaluators/metrics/general.py
index 54c2549..77e9e6d 100644
--- a/desktop_env/evaluators/metrics/general.py
+++ b/desktop_env/evaluators/metrics/general.py
@@ -434,7 +434,7 @@ def check_line_number(file_path, line_number):
     # check if file_path exists
     if file_path is None or not os.path.isfile(file_path):
         return 0.
-    timeRegex = "([01]\d|2[0-3]):[0-5]\d:[0-5]\d"
+    timeRegex = "([01]\\d|2[0-3]):[0-5]\\d:([0-5]\\d|60)"
     # check if the string that matches the timeRegex in this txt file equals to line_number["expected"]
     try:
         with open(file_path, 'r') as f: