diff --git a/api/curve/v1/api/data_dataName.py b/api/curve/v1/api/data_dataName.py
index 6be9bc0..74498e0 100644
--- a/api/curve/v1/api/data_dataName.py
+++ b/api/curve/v1/api/data_dataName.py
@@ -212,7 +212,7 @@ def _find_time_format(time_str):
             else:
                 # UNIX_s
                 return E_TIME_FORMATTER.unix
-        elif re.match(r'%d{4}-%d{2}-%d{2}\s%d{2}:%d{2}:%d{2}', time_str):
+        elif re.match(r'\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}', time_str):
             # YYYY-mm-dd HH:MM:SS
             return E_TIME_FORMATTER.rfc
         return None